======================================
| [  631.256396][    C3] 1 lock held by swapper/3/0:
| [ 631.256583][ C3] #0: ffffffffb938d440 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [  631.256911][    C3]
| [  631.256911][    C3] stack backtrace:
[  631.257144][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  631.257147][    C3] Call Trace:
[  631.257150][    C3]  <IRQ>
[ 631.257153][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 631.257164][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 631.257169][ C3] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 631.257173][ C3] ? stack_depot_save_flags (lib/stackdepot.c:552 lib/stackdepot.c:619) 
[ 631.257181][ C3] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 631.257186][ C3] mark_lock (kernel/locking/lockdep.c:4756) 
[ 631.257190][ C3] mark_usage (kernel/locking/lockdep.c:4645) 
[ 631.257194][ C3] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 631.257197][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 631.257201][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 631.257204][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 631.257207][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 631.257216][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 631.257219][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 631.257223][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 631.257230][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 631.257233][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 631.257238][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 631.257240][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 631.257244][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 631.257247][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 631.257251][ C3] ? trace_rcu_segcb_stats (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745 ./include/trace/events/rcu.h:537) 
[ 631.257255][ C3] ? kasan_quarantine_put (mm/kasan/quarantine.c:234 (discriminator 1)) 
[ 631.257259][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 631.257263][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:54 lib/ref_tracker.c:223) 
[ 631.257267][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 631.257270][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 631.257273][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 631.257276][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 631.257279][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 631.257282][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 631.257298][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 631.257301][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 631.257305][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 631.257309][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 631.257317][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 631.257320][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 631.257323][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 631.257336][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 631.257340][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 631.257343][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 631.257347][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 631.257351][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 631.257354][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 631.257358][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 631.257361][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 631.257365][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 631.257369][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 631.257375][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 631.257378][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 631.257381][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  631.257384][    C3]  </IRQ>
[  631.257385][    C3]  <TASK>
[ 631.257386][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 631.257398][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 631.257401][ C3] Code: 54 ce 00 e9 d3 58 02 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 07 1f 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	54                   	push   %rsp
   1:	ce                   	(bad)
   2:	00 e9                	add    %ch,%cl
   4:	d3 58 02             	rcrl   %cl,0x2(%rax)
   7:	00 0f                	add    %cl,(%rdi)
   9:	1f                   	(bad)
   a:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d 33 07 1f 00 	verw   0x1f0733(%rip)        # 0x1f075b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 
   f:	66 90                	xchg   %ax,%ax
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[  631.257404][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000242
[  631.257411][    C3] RAX: 0000000000c39b01 RBX: 1ffff9200002afc1 RCX: ffffffffb7ca43e9
[  631.257413][    C3] RDX: 0000000000000000 RSI: ffffffffb892ba5f RDI: ffffffffb805cf00
[  631.257415][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed100d9f6702
[  631.257417][    C3] R10: ffff88806cfb3813 R11: ffffffffb9011288 R12: 0000000000000000
[  631.257419][    C3] R13: ffff888001b645c0 R14: dffffc0000000000 R15: 0000000000000000
[ 631.257423][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 631.257429][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 631.257432][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 631.257435][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 631.257439][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 631.257443][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 631.257452][ C3] do_idle (kernel/sched/idle.c:325) 
[ 631.257455][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 631.257459][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 631.257462][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 631.257467][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [ 656.670135][ C3] hardirqs last enabled at (0): 0x0 
| [ 656.670142][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 656.670159][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 656.670163][ C3] softirqs last disabled at (0): 0x0 
[  656.670175][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 656.670178][ C3] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 656.670185][ C3] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[  656.670188][    C3] RSP: 0018:ffffc90000270a40 EFLAGS: 00000202
[  656.670192][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  656.670194][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  656.670196][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  656.670198][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  656.670200][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  656.670202][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  656.670204][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  656.670208][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  656.670210][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  656.670211][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  656.670213][    C3] PKRU: 55555554
[  656.670214][    C3] Call Trace:
[  656.670219][    C3]  <IRQ>
[ 656.670220][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 656.670230][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 656.670238][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 656.670246][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 656.670249][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 656.670255][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 656.670261][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 656.670264][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 656.670269][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 656.670272][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 656.670278][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 656.670281][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 656.670283][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 656.670286][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 656.670293][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 656.670299][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 656.670301][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 656.670306][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 656.670311][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 656.670316][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 656.670321][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 656.670327][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 656.670339][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 656.670346][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 656.670349][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 656.670352][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 656.670356][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 656.670359][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 656.670362][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 656.670370][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 656.670373][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 656.670376][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 656.670380][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 656.670385][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 656.670389][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 656.670392][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 656.670396][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 656.670399][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 656.670404][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 656.670408][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 656.670411][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 656.670417][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 656.670420][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 656.670424][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 656.670428][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 656.670433][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 656.670439][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 656.670443][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 656.670446][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  656.670449][    C3]  </IRQ>
[  656.670450][    C3]  <TASK>
[ 656.670452][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 656.670459][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 656.670462][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  656.670464][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  656.670467][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  656.670468][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  656.670470][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  656.670472][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  656.670473][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 656.670477][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 656.670483][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 656.670488][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 656.670492][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 656.670497][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 656.670499][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 656.670504][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 656.670506][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 656.670511][ C3] xas_alloc (lib/xarray.c:378) 
[ 656.670516][ C3] xas_create (lib/xarray.c:685) 
[ 656.670523][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 656.670527][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 656.670531][ C3] __xa_store (lib/xarray.c:1703) 
[ 656.670535][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 656.670540][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 656.670543][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 656.670546][ C3] ? xa_store (lib/xarray.c:1734) 
[ 656.670551][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 656.670555][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 656.670558][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 656.670563][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 656.670566][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 656.670568][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 656.670572][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 656.670575][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 656.670580][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 656.670583][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 656.670588][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 656.670592][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 656.670597][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 656.670609][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 656.670613][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 656.670627][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 656.670632][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 656.670635][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 656.670639][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 656.670642][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 656.670645][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 656.670654][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 656.670658][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 656.670663][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  656.670667][    C3] RIP: 0033:0x7f439756d93b
[ 656.670672][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  656.670674][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  656.670677][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  656.670679][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  656.670681][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  656.670682][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  656.670684][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [  658.011430][    C3] rcu: INFO: rcu_preempt self-detected stall on CPU
| [  658.011966][    C3] rcu: 3-....: (25966 ticks this GP) idle=10a4/1/0x4000000000000000 softirq=224221/224227 fqs=6487
| [  658.012445][    C3] rcu: (t=26000 jiffies g=359693 q=1397 ncpus=4)
| [  658.012754][    C3] Tainted: [L]=SOFTLOCKUP
[  658.012756][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 658.012759][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 658.012784][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  658.012790][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[  658.012795][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  658.012798][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  658.012801][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  658.012802][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  658.012805][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  658.012807][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  658.012809][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  658.012813][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  658.012815][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  658.012816][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  658.012818][    C3] PKRU: 55555554
[  658.012819][    C3] Call Trace:
[  658.012821][    C3]  <IRQ>
[ 658.012822][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 658.012835][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 658.012841][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 658.012844][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 658.012855][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 658.012866][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 658.012869][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 658.012876][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 658.012880][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 658.012885][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 658.012888][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 658.012891][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 658.012894][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 658.012903][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 658.012909][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 658.012912][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 658.012919][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 658.012925][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 658.012929][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 658.012935][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 658.012942][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 658.012953][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 658.012961][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 658.012964][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 658.012967][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 658.012970][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 658.012973][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 658.012976][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 658.012989][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 658.012993][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 658.012997][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 658.013002][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 658.013008][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 658.013012][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 658.013015][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 658.013022][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 658.013025][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 658.013031][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 658.013036][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 658.013039][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 658.013044][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 658.013048][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 658.013051][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 658.013056][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 658.013060][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 658.013066][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 658.013069][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 658.013072][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  658.013075][    C3]  </IRQ>
[  658.013076][    C3]  <TASK>
[ 658.013079][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 658.013086][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 658.013090][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  658.013093][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  658.013095][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  658.013098][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  658.013099][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  658.013101][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  658.013102][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 658.013106][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 658.013111][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 658.013116][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 658.013120][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 658.013124][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 658.013127][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 658.013130][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 658.013133][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 658.013137][ C3] xas_alloc (lib/xarray.c:378) 
[ 658.013142][ C3] xas_create (lib/xarray.c:685) 
[ 658.013148][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 658.013152][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 658.013155][ C3] __xa_store (lib/xarray.c:1703) 
[ 658.013159][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 658.013163][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 658.013166][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 658.013169][ C3] ? xa_store (lib/xarray.c:1734) 
[ 658.013173][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 658.013177][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 658.013180][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 658.013185][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 658.013187][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 658.013190][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 658.013194][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 658.013197][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 658.013201][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 658.013205][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 658.013209][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 658.013213][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 658.013218][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 658.013230][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 658.013234][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 658.013245][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 658.013254][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 658.013257][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 658.013261][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 658.013263][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 658.013267][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 658.013276][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 658.013280][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 658.013288][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  658.013291][    C3] RIP: 0033:0x7f439756d93b
[ 658.013299][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  658.013302][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  658.013304][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  658.013306][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  658.013307][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  658.013310][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  658.013312][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 684.669181][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 684.669200][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 684.669203][ C1] softirqs last disabled at (0): 0x0 
| [  684.669226][    C1] Tainted: [L]=SOFTLOCKUP
[  684.669228][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 684.669234][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 684.669252][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  684.669257][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[  684.669261][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  684.669264][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  684.669266][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  684.669268][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[  684.669270][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[  684.669273][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[  684.669276][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  684.669279][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[  684.669282][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  684.669284][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  684.669286][    C1] PKRU: 55555554
[  684.669287][    C1] Call Trace:
[  684.669293][    C1]  <TASK>
[ 684.669299][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 684.669303][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 684.669312][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 684.669319][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 684.669346][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 684.669351][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 684.669354][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 684.669357][ C1] ? xa_store (lib/xarray.c:1734) 
[ 684.669368][ C1] xa_store (lib/xarray.c:1734) 
[ 684.669374][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 684.669384][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 684.669390][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 684.669393][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 684.669396][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 684.669407][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 684.669410][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 684.669422][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 684.669426][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 684.669431][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 684.669442][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 684.669447][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 684.669462][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 684.669466][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 684.669475][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 684.669481][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 684.669485][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 684.669492][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 684.669496][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 684.669500][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 684.669510][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 684.669514][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 684.669524][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  684.669531][    C1] RIP: 0033:0x7f439756d93b
[ 684.669541][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  684.669544][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  684.669547][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  684.669550][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  684.669554][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[  684.669556][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  684.669558][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 684.670136][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 684.670143][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 684.670147][ C3] softirqs last disabled at (0): 0x0 
| [  684.670161][    C3] Tainted: [L]=SOFTLOCKUP
[  684.670163][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 684.670166][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:104 kernel/locking/qspinlock.c:141) 
[ 684.670174][ C3] Code: c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44 24 40 <85> c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00 00 e8 60 b8 c7 fd be
All code
========
   0:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   4:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
   a:	48 89 ef             	mov    %rbp,%rdi
   d:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86f
  12:	41 0f b6 06          	movzbl (%r14),%eax
  16:	41 38 c5             	cmp    %al,%r13b
  19:	7c 08                	jl     0x23
  1b:	84 c0                	test   %al,%al
  1d:	0f 85 8d 07 00 00    	jne    0x7b0
  23:	8b 45 00             	mov    0x0(%rbp),%eax
  26:	89 44 24 40          	mov    %eax,0x40(%rsp)
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 6e 01 00 00    	jne    0x1a0
  32:	48 89 ef             	mov    %rbp,%rdi
  35:	be 04 00 00 00       	mov    $0x4,%esi
  3a:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b89f
  3f:	be                   	.byte 0xbe

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 6e 01 00 00    	jne    0x176
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	be 04 00 00 00       	mov    $0x4,%esi
  10:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b875
  15:	be                   	.byte 0xbe
[  684.670178][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000246
[  684.670182][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  684.670184][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  684.670187][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  684.670189][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  684.670191][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  684.670194][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  684.670196][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  684.670200][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  684.670202][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  684.670203][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  684.670205][    C3] PKRU: 55555554
[  684.670206][    C3] Call Trace:
[  684.670212][    C3]  <IRQ>
[ 684.670214][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 684.670225][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 684.670235][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 684.670239][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 684.670248][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 684.670258][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 684.670262][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 684.670266][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 684.670272][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 684.670277][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 684.670279][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 684.670283][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 684.670286][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 684.670292][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 684.670297][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 684.670301][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 684.670306][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 684.670311][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 684.670318][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 684.670325][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 684.670330][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 684.670338][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 684.670348][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 684.670351][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 684.670355][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 684.670359][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 684.670363][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 684.670366][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 684.670381][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 684.670385][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 684.670388][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 684.670392][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 684.670400][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 684.670404][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 684.670407][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 684.670413][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 684.670416][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 684.670421][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 684.670427][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 684.670430][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 684.670438][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 684.670442][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 684.670446][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 684.670451][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 684.670456][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 684.670464][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 684.670469][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 684.670473][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  684.670478][    C3]  </IRQ>
[  684.670479][    C3]  <TASK>
[ 684.670481][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 684.670487][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 684.670491][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  684.670495][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  684.670499][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  684.670501][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  684.670503][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  684.670505][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  684.670508][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 684.670512][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 684.670519][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 684.670526][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 684.670531][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 684.670536][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 684.670539][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 684.670543][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 684.670547][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 684.670553][ C3] xas_alloc (lib/xarray.c:378) 
[ 684.670558][ C3] xas_create (lib/xarray.c:685) 
[ 684.670565][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 684.670570][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 684.670573][ C3] __xa_store (lib/xarray.c:1703) 
[ 684.670578][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 684.670583][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 684.670585][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 684.670588][ C3] ? xa_store (lib/xarray.c:1734) 
[ 684.670593][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 684.670597][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 684.670600][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 684.670605][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 684.670608][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 684.670611][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 684.670615][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 684.670618][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 684.670623][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 684.670627][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 684.670633][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 684.670636][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 684.670641][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 684.670649][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 684.670652][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 684.670658][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 684.670662][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 684.670666][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 684.670670][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 684.670672][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 684.670676][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 684.670682][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 684.670686][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 684.670691][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  684.670694][    C3] RIP: 0033:0x7f439756d93b
[ 684.670700][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  684.670703][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  684.670706][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  684.670709][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  684.670711][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  684.670714][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  684.670716][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 712.656141][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 712.656152][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 712.656156][ C0] softirqs last disabled at (0): 0x0 
| [  712.656168][    C0] Tainted: [L]=SOFTLOCKUP
[  712.656170][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 712.656172][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 712.656183][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  712.656186][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[  712.656190][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  712.656192][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  712.656194][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  712.656196][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[  712.656198][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[  712.656200][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[  712.656202][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  712.656207][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[  712.656208][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  712.656210][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  712.656211][    C0] PKRU: 55555554
[  712.656213][    C0] Call Trace:
[  712.656217][    C0]  <TASK>
[ 712.656221][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 712.656225][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 712.656231][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 712.656237][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 712.656245][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 712.656249][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 712.656252][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 712.656254][ C0] ? xa_store (lib/xarray.c:1734) 
[ 712.656262][ C0] xa_store (lib/xarray.c:1734) 
[ 712.656267][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 712.656274][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 712.656279][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 712.656282][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 712.656285][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 712.656293][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 712.656296][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 712.656305][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 712.656309][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 712.656314][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 712.656322][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 712.656327][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 712.656338][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 712.656342][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 712.656350][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 712.656355][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 712.656358][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 712.656363][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 712.656367][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 712.656371][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 712.656379][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 712.656383][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 712.656389][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  712.656395][    C0] RIP: 0033:0x7f439756d93b
[ 712.656399][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  712.656402][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  712.656405][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  712.656407][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  712.656409][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[  712.656411][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  712.656412][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 712.669138][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 712.669147][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 712.669151][ C1] softirqs last disabled at (0): 0x0 
| [  712.669162][    C1] Tainted: [L]=SOFTLOCKUP
[  712.669164][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 712.669167][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 712.669176][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  712.669178][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[  712.669182][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  712.669184][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  712.669186][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  712.669187][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[  712.669189][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[  712.669191][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[  712.669194][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  712.669197][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[  712.669199][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  712.669200][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  712.669202][    C1] PKRU: 55555554
[  712.669203][    C1] Call Trace:
[  712.669207][    C1]  <TASK>
[ 712.669211][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 712.669215][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 712.669220][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 712.669224][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 712.669232][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 712.669235][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 712.669238][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 712.669241][ C1] ? xa_store (lib/xarray.c:1734) 
[ 712.669248][ C1] xa_store (lib/xarray.c:1734) 
[ 712.669253][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 712.669259][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 712.669264][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 712.669267][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 712.669270][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 712.669276][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 712.669280][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 712.669288][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 712.669291][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 712.669296][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 712.669303][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 712.669308][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 712.669317][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 712.669320][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 712.669327][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 712.669332][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 712.669335][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 712.669340][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 712.669343][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 712.669347][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 712.669354][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 712.669358][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 712.669363][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  712.669369][    C1] RIP: 0033:0x7f439756d93b
[ 712.669374][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  712.669376][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  712.669379][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  712.669381][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  712.669383][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[  712.669385][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  712.669387][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 712.670126][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 712.670133][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 712.670136][ C3] softirqs last disabled at (0): 0x0 
| [  712.670146][    C3] Tainted: [L]=SOFTLOCKUP
[  712.670148][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 712.670150][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 712.670155][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  712.670158][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[  712.670161][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  712.670163][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  712.670165][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  712.670167][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  712.670169][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  712.670171][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  712.670173][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  712.670176][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  712.670179][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  712.670180][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  712.670181][    C3] PKRU: 55555554
[  712.670182][    C3] Call Trace:
[  712.670185][    C3]  <IRQ>
[ 712.670186][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 712.670193][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 712.670198][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 712.670201][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 712.670207][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 712.670212][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 712.670215][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 712.670218][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 712.670222][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 712.670225][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 712.670228][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 712.670231][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 712.670233][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 712.670238][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 712.670243][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 712.670246][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 712.670249][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 712.670254][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 712.670258][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 712.670264][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 712.670268][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 712.670273][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 712.670278][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 712.670281][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 712.670284][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 712.670287][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 712.670291][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 712.670293][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 712.670301][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 712.670304][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 712.670307][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 712.670311][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 712.670316][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 712.670319][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 712.670322][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 712.670326][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 712.670329][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 712.670334][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 712.670338][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 712.670341][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 712.670347][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 712.670351][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 712.670354][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 712.670359][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 712.670363][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 712.670369][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 712.670372][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 712.670376][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  712.670380][    C3]  </IRQ>
[  712.670381][    C3]  <TASK>
[ 712.670382][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 712.670387][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 712.670390][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  712.670393][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  712.670396][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  712.670398][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  712.670399][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  712.670401][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  712.670403][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 712.670407][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 712.670412][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 712.670418][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 712.670422][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 712.670427][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 712.670429][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 712.670434][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 712.670436][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 712.670441][ C3] xas_alloc (lib/xarray.c:378) 
[ 712.670446][ C3] xas_create (lib/xarray.c:685) 
[ 712.670452][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 712.670457][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 712.670461][ C3] __xa_store (lib/xarray.c:1703) 
[ 712.670465][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 712.670469][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 712.670472][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 712.670475][ C3] ? xa_store (lib/xarray.c:1734) 
[ 712.670480][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 712.670484][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 712.670487][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 712.670492][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 712.670494][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 712.670497][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 712.670501][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 712.670504][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 712.670508][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 712.670512][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 712.670517][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 712.670520][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 712.670525][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 712.670531][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 712.670535][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 712.670540][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 712.670544][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 712.670547][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 712.670550][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 712.670553][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 712.670556][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 712.670562][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 712.670565][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 712.670570][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  712.670573][    C3] RIP: 0033:0x7f439756d93b
[ 712.670577][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  712.670579][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  712.670582][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  712.670584][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  712.670586][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  712.670587][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  712.670589][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [  736.025184][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [  736.025472][    C3] Sending NMI from CPU 3 to CPUs 1:
| [  736.025716][    C1] NMI backtrace for cpu 1
| [  736.025731][    C1] Tainted: [L]=SOFTLOCKUP
[  736.025733][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 736.025735][ C1] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 736.025743][ C1] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[  736.025746][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[  736.025750][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  736.025752][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  736.025754][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  736.025756][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[  736.025758][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[  736.025760][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[  736.025762][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  736.025765][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[  736.025767][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  736.025769][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  736.025770][    C1] PKRU: 55555554
[  736.025772][    C1] Call Trace:
[  736.025774][    C1]  <TASK>
[ 736.025777][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 736.025781][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 736.025786][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 736.025790][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 736.025797][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 736.025800][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 736.025803][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 736.025806][ C1] ? xa_store (lib/xarray.c:1734) 
[ 736.025814][ C1] xa_store (lib/xarray.c:1734) 
[ 736.025818][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 736.025823][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 736.025828][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 736.025831][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 736.025834][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 736.025839][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 736.025842][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 736.025851][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 736.025855][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 736.025860][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 736.025868][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 736.025873][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 736.025881][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 736.025885][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 736.025893][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 736.025900][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 736.025903][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 736.025910][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 736.025913][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 736.025916][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 736.025924][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 736.025928][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 736.025934][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  736.025940][    C1] RIP: 0033:0x7f439756d93b
[ 736.025946][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  736.025949][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  736.025952][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  736.025955][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  736.025956][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[  736.025958][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  736.025960][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [  736.025958][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [  736.025960][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [  736.025965][    C1]  </TASK>
| [  736.026715][    C3] Tainted: [L]=SOFTLOCKUP
[  736.026717][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 736.026719][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 736.026724][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[  736.026728][    C3] RSP: 0018:ffffc90000270a30 EFLAGS: 00000282
[  736.026731][    C3] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  736.026733][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  736.026735][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  736.026737][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  736.026739][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  736.026742][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  736.026745][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  736.026748][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  736.026750][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  736.026752][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  736.026754][    C3] PKRU: 55555554
[  736.026755][    C3] Call Trace:
[  736.026756][    C3]  <IRQ>
[ 736.026758][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 736.026762][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 736.026768][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 736.026773][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 736.026776][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 736.026780][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 736.026786][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 736.026789][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 736.026794][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 736.026796][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 736.026800][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 736.026803][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 736.026805][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 736.026808][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 736.026813][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 736.026816][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 736.026819][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 736.026822][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 736.026828][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 736.026832][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 736.026837][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 736.026841][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 736.026846][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 736.026850][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 736.026853][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 736.026856][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 736.026859][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 736.026862][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 736.026865][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 736.026874][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 736.026877][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 736.026880][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 736.026884][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 736.026888][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 736.026891][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 736.026894][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 736.026898][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 736.026902][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 736.026906][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 736.026910][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 736.026913][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 736.026918][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 736.026922][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 736.026925][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 736.026930][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 736.026934][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 736.026939][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 736.026942][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 736.026946][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  736.026949][    C3]  </IRQ>
[  736.026950][    C3]  <TASK>
[ 736.026951][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 736.026956][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 736.026959][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  736.026961][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  736.026963][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  736.026965][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  736.026967][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  736.026968][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  736.026970][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 736.026974][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 736.026979][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 736.026984][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 736.026987][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 736.026992][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 736.026994][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 736.026998][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 736.027001][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 736.027005][ C3] xas_alloc (lib/xarray.c:378) 
[ 736.027010][ C3] xas_create (lib/xarray.c:685) 
[ 736.027016][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 736.027020][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 736.027024][ C3] __xa_store (lib/xarray.c:1703) 
[ 736.027028][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 736.027033][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 736.027035][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 736.027038][ C3] ? xa_store (lib/xarray.c:1734) 
[ 736.027043][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 736.027047][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 736.027050][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 736.027055][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 736.027058][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 736.027060][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 736.027064][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 736.027067][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 736.027072][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 736.027075][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 736.027080][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 736.027083][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 736.027087][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 736.027094][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 736.027097][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 736.027101][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 736.027106][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 736.027109][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 736.027112][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 736.027114][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 736.027118][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 736.027123][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 736.027127][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 736.027131][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  736.027133][    C3] RIP: 0033:0x7f439756d93b
[ 736.027138][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  736.027141][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  736.027144][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  736.027145][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  736.027147][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  736.027149][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  736.027150][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 740.656142][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 740.656153][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 740.656156][ C0] softirqs last disabled at (0): 0x0 
| [  740.656169][    C0] Tainted: [L]=SOFTLOCKUP
[  740.656171][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 740.656173][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 740.656183][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  740.656186][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[  740.656189][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  740.656191][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  740.656193][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  740.656195][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[  740.656197][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[  740.656199][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[  740.656201][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  740.656206][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[  740.656208][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  740.656209][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  740.656211][    C0] PKRU: 55555554
[  740.656212][    C0] Call Trace:
[  740.656216][    C0]  <TASK>
[ 740.656220][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 740.656224][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 740.656230][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 740.656234][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 740.656242][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 740.656246][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 740.656249][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 740.656251][ C0] ? xa_store (lib/xarray.c:1734) 
[ 740.656259][ C0] xa_store (lib/xarray.c:1734) 
[ 740.656264][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 740.656270][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 740.656275][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 740.656278][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 740.656281][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 740.656289][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 740.656294][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 740.656304][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 740.656312][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 740.656321][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 740.656332][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 740.656340][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 740.656350][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 740.656353][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 740.656360][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 740.656366][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 740.656369][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 740.656374][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 740.656378][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 740.656381][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 740.656388][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 740.656392][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 740.656398][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  740.656403][    C0] RIP: 0033:0x7f439756d93b
[ 740.656409][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  740.656411][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  740.656414][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  740.656416][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  740.656418][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[  740.656420][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  740.656422][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 744.669145][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 744.669154][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 744.669158][ C2] softirqs last disabled at (0): 0x0 
| [  744.669172][    C2] Tainted: [L]=SOFTLOCKUP
[  744.669174][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 744.669177][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 744.669189][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[  744.669192][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[  744.669195][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  744.669197][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  744.669199][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  744.669201][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[  744.669203][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[  744.669205][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[  744.669207][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  744.669211][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[  744.669212][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  744.669214][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  744.669215][    C2] PKRU: 55555554
[  744.669216][    C2] Call Trace:
[  744.669222][    C2]  <TASK>
[ 744.669227][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 744.669231][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 744.669236][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 744.669241][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 744.669249][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 744.669253][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 744.669256][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 744.669258][ C2] ? xa_store (lib/xarray.c:1734) 
[ 744.669266][ C2] xa_store (lib/xarray.c:1734) 
[ 744.669270][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 744.669277][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 744.669282][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 744.669285][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 744.669288][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 744.669295][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 744.669298][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 744.669306][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 744.669310][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 744.669315][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 744.669323][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 744.669328][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 744.669338][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 744.669342][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 744.669348][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 744.669354][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 744.669357][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 744.669362][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 744.669366][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 744.669369][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 744.669377][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 744.669382][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 744.669387][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  744.669393][    C2] RIP: 0033:0x7f439756d93b
[ 744.669399][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  744.669401][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  744.669404][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  744.669406][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  744.669408][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  744.669410][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  744.669411][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 760.669142][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 760.669152][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 760.669155][ C1] softirqs last disabled at (0): 0x0 
| [  760.669169][    C1] Tainted: [L]=SOFTLOCKUP
[  760.669170][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 760.669172][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 760.669183][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  760.669186][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[  760.669189][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  760.669191][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  760.669193][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  760.669195][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[  760.669197][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[  760.669199][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[  760.669201][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  760.669205][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[  760.669207][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  760.669208][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  760.669210][    C1] PKRU: 55555554
[  760.669211][    C1] Call Trace:
[  760.669216][    C1]  <TASK>
[ 760.669220][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 760.669224][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 760.669229][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 760.669233][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 760.669242][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 760.669245][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 760.669248][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 760.669251][ C1] ? xa_store (lib/xarray.c:1734) 
[ 760.669258][ C1] xa_store (lib/xarray.c:1734) 
[ 760.669263][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 760.669269][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 760.669274][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 760.669277][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 760.669280][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 760.669287][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 760.669290][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 760.669298][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 760.669301][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 760.669306][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 760.669314][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 760.669318][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 760.669328][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 760.669331][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 760.669338][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 760.669343][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 760.669346][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 760.669351][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 760.669354][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 760.669358][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 760.669365][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 760.669369][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 760.669375][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  760.669381][    C1] RIP: 0033:0x7f439756d93b
[ 760.669386][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  760.669388][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  760.669391][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  760.669393][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  760.669395][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[  760.669397][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  760.669399][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 760.670129][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 760.670135][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 760.670139][ C3] softirqs last disabled at (0): 0x0 
| [  760.670149][    C3] Tainted: [L]=SOFTLOCKUP
[  760.670150][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 760.670152][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 760.670158][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  760.670161][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[  760.670164][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  760.670166][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  760.670168][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  760.670170][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  760.670172][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  760.670174][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  760.670176][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  760.670179][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  760.670181][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  760.670182][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  760.670184][    C3] PKRU: 55555554
[  760.670185][    C3] Call Trace:
[  760.670188][    C3]  <IRQ>
[ 760.670189][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 760.670196][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 760.670201][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 760.670204][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 760.670209][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 760.670215][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 760.670218][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 760.670222][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 760.670225][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 760.670229][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 760.670231][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 760.670234][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 760.670237][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 760.670241][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 760.670245][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 760.670249][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 760.670252][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 760.670258][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 760.670262][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 760.670268][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 760.670272][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 760.670277][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 760.670282][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 760.670285][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 760.670288][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 760.670291][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 760.670295][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 760.670297][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 760.670304][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 760.670307][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 760.670310][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 760.670314][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 760.670318][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 760.670321][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 760.670324][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 760.670328][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 760.670331][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 760.670335][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 760.670340][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 760.670343][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 760.670349][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 760.670353][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 760.670356][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 760.670361][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 760.670365][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 760.670371][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 760.670375][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 760.670379][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  760.670383][    C3]  </IRQ>
[  760.670383][    C3]  <TASK>
[ 760.670385][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 760.670389][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 760.670393][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  760.670396][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  760.670399][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  760.670401][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  760.670402][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  760.670404][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  760.670406][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 760.670410][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 760.670416][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 760.670422][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 760.670426][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 760.670430][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 760.670433][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 760.670437][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 760.670440][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 760.670445][ C3] xas_alloc (lib/xarray.c:378) 
[ 760.670449][ C3] xas_create (lib/xarray.c:685) 
[ 760.670456][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 760.670460][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 760.670464][ C3] __xa_store (lib/xarray.c:1703) 
[ 760.670468][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 760.670473][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 760.670475][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 760.670479][ C3] ? xa_store (lib/xarray.c:1734) 
[ 760.670484][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 760.670488][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 760.670491][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 760.670496][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 760.670499][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 760.670502][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 760.670506][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 760.670509][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 760.670513][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 760.670517][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 760.670521][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 760.670525][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 760.670529][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 760.670536][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 760.670540][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 760.670545][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 760.670549][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 760.670552][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 760.670555][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 760.670558][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 760.670561][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 760.670566][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 760.670570][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 760.670575][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  760.670578][    C3] RIP: 0033:0x7f439756d93b
[ 760.670582][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  760.670584][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  760.670587][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  760.670589][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  760.670591][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  760.670593][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  760.670595][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 768.656138][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 768.656146][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 768.656150][ C0] softirqs last disabled at (0): 0x0 
| [  768.656163][    C0] Tainted: [L]=SOFTLOCKUP
[  768.656164][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 768.656166][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 768.656174][ C0] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[  768.656176][    C0] RSP: 0018:ffffc900034c7a00 EFLAGS: 00000282
[  768.656180][    C0] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  768.656182][    C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  768.656184][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  768.656186][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[  768.656188][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[  768.656190][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[  768.656192][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  768.656196][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[  768.656198][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  768.656199][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  768.656201][    C0] PKRU: 55555554
[  768.656202][    C0] Call Trace:
[  768.656206][    C0]  <TASK>
[ 768.656209][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 768.656219][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 768.656222][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 768.656227][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 768.656231][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 768.656238][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 768.656242][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 768.656244][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 768.656247][ C0] ? xa_store (lib/xarray.c:1734) 
[ 768.656254][ C0] xa_store (lib/xarray.c:1734) 
[ 768.656259][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 768.656265][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 768.656270][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 768.656273][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 768.656276][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 768.656283][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 768.656286][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 768.656294][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 768.656298][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 768.656303][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 768.656310][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 768.656315][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 768.656324][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 768.656328][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 768.656335][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 768.656340][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 768.656343][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 768.656348][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 768.656352][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 768.656355][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 768.656362][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 768.656366][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 768.656372][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  768.656377][    C0] RIP: 0033:0x7f439756d93b
[ 768.656382][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  768.656384][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  768.656388][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  768.656390][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  768.656392][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[  768.656393][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  768.656395][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 772.669133][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 772.669140][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 772.669144][ C2] softirqs last disabled at (0): 0x0 
| [  772.669156][    C2] Tainted: [L]=SOFTLOCKUP
[  772.669159][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 772.669161][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 772.669168][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  772.669171][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[  772.669174][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  772.669177][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  772.669179][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  772.669181][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[  772.669183][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[  772.669185][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[  772.669187][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  772.669191][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[  772.669193][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  772.669194][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  772.669196][    C2] PKRU: 55555554
[  772.669197][    C2] Call Trace:
[  772.669200][    C2]  <TASK>
[ 772.669203][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 772.669208][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 772.669213][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 772.669217][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 772.669223][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 772.669227][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 772.669230][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 772.669233][ C2] ? xa_store (lib/xarray.c:1734) 
[ 772.669239][ C2] xa_store (lib/xarray.c:1734) 
[ 772.669243][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 772.669248][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 772.669253][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 772.669256][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 772.669259][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 772.669265][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 772.669269][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 772.669275][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 772.669279][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 772.669284][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 772.669289][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 772.669294][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 772.669302][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 772.669306][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 772.669311][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 772.669316][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 772.669320][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 772.669324][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 772.669328][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 772.669331][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 772.669337][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 772.669341][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 772.669346][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  772.669350][    C2] RIP: 0033:0x7f439756d93b
[ 772.669355][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  772.669358][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  772.669361][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  772.669363][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  772.669365][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  772.669367][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  772.669369][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 788.669137][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 788.669147][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 788.669151][ C1] softirqs last disabled at (0): 0x0 
| [  788.669164][    C1] Tainted: [L]=SOFTLOCKUP
[  788.669166][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 788.669169][ C1] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 788.669179][ C1] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[  788.669181][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[  788.669184][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  788.669186][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  788.669188][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  788.669190][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[  788.669192][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[  788.669194][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[  788.669197][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  788.669200][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[  788.669202][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  788.669203][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  788.669205][    C1] PKRU: 55555554
[  788.669206][    C1] Call Trace:
[  788.669210][    C1]  <TASK>
[ 788.669213][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 788.669217][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 788.669222][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 788.669227][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 788.669234][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 788.669237][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 788.669240][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 788.669243][ C1] ? xa_store (lib/xarray.c:1734) 
[ 788.669250][ C1] xa_store (lib/xarray.c:1734) 
[ 788.669255][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 788.669261][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 788.669266][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 788.669269][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 788.669272][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 788.669278][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 788.669282][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 788.669289][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 788.669293][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 788.669298][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 788.669305][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 788.669310][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 788.669319][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 788.669323][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 788.669330][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 788.669334][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 788.669337][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 788.669342][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 788.669346][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 788.669349][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 788.669357][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 788.669360][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 788.669366][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  788.669371][    C1] RIP: 0033:0x7f439756d93b
[ 788.669375][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  788.669377][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  788.669380][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  788.669382][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  788.669384][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[  788.669386][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  788.669387][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 788.670127][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 788.670133][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 788.670136][ C3] softirqs last disabled at (0): 0x0 
| [  788.670147][    C3] Tainted: [L]=SOFTLOCKUP
[  788.670148][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 788.670150][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 788.670157][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  788.670159][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[  788.670162][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  788.670164][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  788.670166][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  788.670168][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  788.670170][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  788.670172][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  788.670174][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  788.670177][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  788.670179][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  788.670180][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  788.670182][    C3] PKRU: 55555554
[  788.670183][    C3] Call Trace:
[  788.670186][    C3]  <IRQ>
[ 788.670188][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 788.670194][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 788.670199][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 788.670202][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 788.670207][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 788.670214][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 788.670217][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 788.670221][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 788.670224][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 788.670228][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 788.670230][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 788.670233][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 788.670235][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 788.670240][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 788.670244][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 788.670247][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 788.670250][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 788.670255][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 788.670259][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 788.670265][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 788.670269][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 788.670274][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 788.670280][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 788.670283][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 788.670285][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 788.670289][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 788.670293][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 788.670295][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 788.670302][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 788.670305][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 788.670308][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 788.670312][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 788.670317][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 788.670320][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 788.670323][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 788.670327][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 788.670330][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 788.670334][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 788.670340][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 788.670342][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 788.670348][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 788.670352][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 788.670355][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 788.670360][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 788.670364][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 788.670370][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 788.670374][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 788.670377][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  788.670381][    C3]  </IRQ>
[  788.670382][    C3]  <TASK>
[ 788.670383][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 788.670388][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 788.670392][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  788.670394][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  788.670397][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  788.670399][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  788.670401][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  788.670403][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  788.670405][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 788.670409][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 788.670415][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 788.670420][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 788.670424][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 788.670428][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 788.670431][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 788.670435][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 788.670437][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 788.670443][ C3] xas_alloc (lib/xarray.c:378) 
[ 788.670448][ C3] xas_create (lib/xarray.c:685) 
[ 788.670454][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 788.670459][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 788.670462][ C3] __xa_store (lib/xarray.c:1703) 
[ 788.670466][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 788.670471][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 788.670473][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 788.670476][ C3] ? xa_store (lib/xarray.c:1734) 
[ 788.670481][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 788.670485][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 788.670488][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 788.670492][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 788.670495][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 788.670497][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 788.670501][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 788.670504][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 788.670509][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 788.670513][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 788.670517][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 788.670521][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 788.670525][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 788.670532][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 788.670536][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 788.670540][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 788.670545][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 788.670548][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 788.670552][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 788.670554][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 788.670558][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 788.670563][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 788.670567][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 788.670572][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  788.670575][    C3] RIP: 0033:0x7f439756d93b
[ 788.670579][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  788.670582][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  788.670585][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  788.670587][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  788.670589][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  788.670590][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  788.670592][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 796.656136][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 796.656144][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 796.656148][ C0] softirqs last disabled at (0): 0x0 
| [  796.656161][    C0] Tainted: [L]=SOFTLOCKUP
[  796.656162][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 796.656164][ C0] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 796.656173][ C0] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[  796.656176][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[  796.656180][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  796.656182][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  796.656184][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  796.656186][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[  796.656188][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[  796.656189][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[  796.656192][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  796.656197][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[  796.656198][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  796.656200][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  796.656201][    C0] PKRU: 55555554
[  796.656203][    C0] Call Trace:
[  796.656206][    C0]  <TASK>
[ 796.656209][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 796.656213][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 796.656218][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 796.656222][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 796.656229][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 796.656233][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 796.656235][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 796.656238][ C0] ? xa_store (lib/xarray.c:1734) 
[ 796.656245][ C0] xa_store (lib/xarray.c:1734) 
[ 796.656249][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 796.656254][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 796.656259][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 796.656262][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 796.656265][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 796.656272][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 796.656275][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 796.656282][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 796.656286][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 796.656292][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 796.656298][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 796.656303][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 796.656311][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 796.656315][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 796.656322][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 796.656327][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 796.656330][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 796.656335][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 796.656338][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 796.656342][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 796.656349][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 796.656353][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 796.656359][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  796.656364][    C0] RIP: 0033:0x7f439756d93b
[ 796.656368][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  796.656371][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  796.656374][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  796.656376][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  796.656378][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[  796.656380][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  796.656382][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 800.669134][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 800.669143][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 800.669146][ C2] softirqs last disabled at (0): 0x0 
| [  800.669158][    C2] Tainted: [L]=SOFTLOCKUP
[  800.669159][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 800.669161][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:103 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 800.669167][ C2] Code: 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d 59 01 48 89 da <48> 29 ea 48 83 fa 10 0f 8e c0 00 00 00 41 89 eb 41 83 e3 07 75 7d
All code
========
   0:	37                   	(bad)
   1:	ff 48 89             	decl   -0x77(%rax)
   4:	fd                   	std
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	4d 89 d1             	mov    %r10,%r9
  12:	48 c1 ed 03          	shr    $0x3,%rbp
  16:	49 c1 e9 03          	shr    $0x3,%r9
  1a:	48 01 c5             	add    %rax,%rbp
  1d:	49 01 c1             	add    %rax,%r9
  20:	48 89 e8             	mov    %rbp,%rax
  23:	49 8d 59 01          	lea    0x1(%r9),%rbx
  27:	48 89 da             	mov    %rbx,%rdx
  2a:*	48 29 ea             	sub    %rbp,%rdx		<-- trapping instruction
  2d:	48 83 fa 10          	cmp    $0x10,%rdx
  31:	0f 8e c0 00 00 00    	jle    0xf7
  37:	41 89 eb             	mov    %ebp,%r11d
  3a:	41 83 e3 07          	and    $0x7,%r11d
  3e:	75 7d                	jne    0xbd

Code starting with the faulting instruction
===========================================
   0:	48 29 ea             	sub    %rbp,%rdx
   3:	48 83 fa 10          	cmp    $0x10,%rdx
   7:	0f 8e c0 00 00 00    	jle    0xcd
   d:	41 89 eb             	mov    %ebp,%r11d
  10:	41 83 e3 07          	and    $0x7,%r11d
  14:	75 7d                	jne    0x93
[  800.669171][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000282
[  800.669174][    C2] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[  800.669176][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  800.669178][    C2] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[  800.669180][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[  800.669182][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[  800.669184][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[  800.669187][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  800.669192][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[  800.669194][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  800.669195][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  800.669197][    C2] PKRU: 55555554
[  800.669198][    C2] Call Trace:
[  800.669201][    C2]  <TASK>
[ 800.669204][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 800.669212][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 800.669215][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 800.669219][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 800.669223][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 800.669229][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 800.669233][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 800.669236][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 800.669239][ C2] ? xa_store (lib/xarray.c:1734) 
[ 800.669246][ C2] xa_store (lib/xarray.c:1734) 
[ 800.669250][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 800.669255][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 800.669260][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 800.669263][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 800.669265][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 800.669271][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 800.669275][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 800.669281][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 800.669285][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 800.669289][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 800.669296][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 800.669300][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 800.669308][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 800.669312][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 800.669317][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 800.669321][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 800.669325][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 800.669330][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 800.669333][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 800.669336][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 800.669343][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 800.669347][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 800.669352][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  800.669356][    C2] RIP: 0033:0x7f439756d93b
[ 800.669360][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  800.669363][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  800.669366][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  800.669368][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  800.669370][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  800.669372][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  800.669374][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [  814.038413][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [  814.038698][    C3] Sending NMI from CPU 3 to CPUs 1:
| [  814.038952][    C1] NMI backtrace for cpu 1
| [  814.038967][    C1] Tainted: [L]=SOFTLOCKUP
[  814.038968][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 814.038971][ C1] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 814.038980][ C1] Code: 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 7b 44 8d ff       	jmp    0xffffffffff8d4482
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[  814.038982][    C1] RSP: 0018:ffffc900034b7a10 EFLAGS: 00000202
[  814.038986][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  814.038988][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  814.038990][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  814.038992][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[  814.038994][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[  814.038995][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[  814.038998][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  814.039001][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[  814.039003][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  814.039004][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  814.039006][    C1] PKRU: 55555554
[  814.039007][    C1] Call Trace:
[  814.039010][    C1]  <TASK>
[ 814.039011][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 814.039018][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 814.039021][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 814.039025][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 814.039029][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 814.039036][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 814.039039][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 814.039042][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 814.039045][ C1] ? xa_store (lib/xarray.c:1734) 
[ 814.039052][ C1] xa_store (lib/xarray.c:1734) 
[ 814.039056][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 814.039062][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 814.039067][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 814.039070][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 814.039073][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 814.039078][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 814.039081][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 814.039089][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 814.039093][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 814.039098][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 814.039105][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 814.039109][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 814.039117][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 814.039121][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 814.039128][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 814.039134][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 814.039138][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 814.039143][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 814.039146][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 814.039149][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 814.039157][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 814.039160][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 814.039165][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  814.039169][    C1] RIP: 0033:0x7f439756d93b
[ 814.039173][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  814.039175][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  814.039179][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  814.039180][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  814.039182][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[  814.039184][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  814.039186][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [  814.039184][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [  814.039186][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [  814.039191][    C1]  </TASK>
| [  814.039953][    C3] Tainted: [L]=SOFTLOCKUP
[  814.039954][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 814.039956][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 814.039961][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  814.039963][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[  814.039966][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  814.039968][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  814.039970][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  814.039972][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  814.039974][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  814.039975][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  814.039978][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  814.039982][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  814.039984][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  814.039985][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  814.039987][    C3] PKRU: 55555554
[  814.039988][    C3] Call Trace:
[  814.039989][    C3]  <IRQ>
[ 814.039990][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 814.039996][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 814.040001][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 814.040004][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 814.040008][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 814.040014][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 814.040017][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 814.040021][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 814.040023][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 814.040027][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 814.040030][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 814.040033][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 814.040036][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 814.040041][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 814.040044][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 814.040047][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 814.040050][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 814.040056][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 814.040059][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 814.040065][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 814.040068][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 814.040073][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 814.040077][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 814.040080][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 814.040083][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 814.040086][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 814.040089][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 814.040092][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 814.040098][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 814.040101][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 814.040104][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 814.040109][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 814.040112][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 814.040116][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 814.040119][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 814.040123][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 814.040126][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 814.040130][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 814.040134][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 814.040137][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 814.040142][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 814.040146][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 814.040149][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 814.040154][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 814.040158][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 814.040163][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 814.040166][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 814.040169][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  814.040172][    C3]  </IRQ>
[  814.040173][    C3]  <TASK>
[ 814.040175][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 814.040179][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 814.040182][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  814.040184][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  814.040186][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  814.040188][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  814.040189][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  814.040191][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  814.040193][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 814.040197][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 814.040202][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 814.040207][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 814.040211][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 814.040215][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 814.040217][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 814.040221][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 814.040224][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 814.040228][ C3] xas_alloc (lib/xarray.c:378) 
[ 814.040232][ C3] xas_create (lib/xarray.c:685) 
[ 814.040238][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 814.040242][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 814.040246][ C3] __xa_store (lib/xarray.c:1703) 
[ 814.040249][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 814.040254][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 814.040256][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 814.040259][ C3] ? xa_store (lib/xarray.c:1734) 
[ 814.040264][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 814.040268][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 814.040271][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 814.040275][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 814.040278][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 814.040280][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 814.040284][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 814.040287][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 814.040292][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 814.040295][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 814.040299][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 814.040303][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 814.040307][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 814.040313][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 814.040316][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 814.040321][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 814.040326][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 814.040329][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 814.040332][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 814.040334][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 814.040338][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 814.040343][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 814.040346][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 814.040351][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  814.040353][    C3] RIP: 0033:0x7f439756d93b
[ 814.040358][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  814.040360][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  814.040363][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  814.040365][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  814.040367][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  814.040368][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  814.040370][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 824.656134][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 824.656142][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 824.656146][ C0] softirqs last disabled at (0): 0x0 
| [  824.656159][    C0] Tainted: [L]=SOFTLOCKUP
[  824.656160][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 824.656162][ C0] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 824.656170][ C0] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[  824.656173][    C0] RSP: 0018:ffffc900034c7a10 EFLAGS: 00000202
[  824.656177][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  824.656179][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  824.656181][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  824.656183][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[  824.656186][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[  824.656187][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[  824.656190][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  824.656194][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[  824.656195][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  824.656197][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  824.656198][    C0] PKRU: 55555554
[  824.656199][    C0] Call Trace:
[  824.656203][    C0]  <TASK>
[ 824.656204][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 824.656214][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 824.656217][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 824.656222][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 824.656226][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 824.656234][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 824.656237][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 824.656240][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 824.656243][ C0] ? xa_store (lib/xarray.c:1734) 
[ 824.656250][ C0] xa_store (lib/xarray.c:1734) 
[ 824.656254][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 824.656260][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 824.656265][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 824.656268][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 824.656271][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 824.656277][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 824.656281][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 824.656288][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 824.656292][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 824.656297][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 824.656305][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 824.656310][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 824.656319][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 824.656323][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 824.656329][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 824.656334][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 824.656337][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 824.656343][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 824.656346][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 824.656350][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 824.656357][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 824.656360][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 824.656366][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  824.656371][    C0] RIP: 0033:0x7f439756d93b
[ 824.656375][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  824.656377][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  824.656380][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  824.656382][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  824.656384][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[  824.656386][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  824.656388][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 828.669132][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 828.669139][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 828.669143][ C2] softirqs last disabled at (0): 0x0 
| [  828.669155][    C2] Tainted: [L]=SOFTLOCKUP
[  828.669156][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 828.669158][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 828.669166][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  828.669169][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[  828.669172][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  828.669174][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  828.669176][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  828.669178][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[  828.669180][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[  828.669182][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[  828.669184][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  828.669189][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[  828.669191][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  828.669192][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  828.669194][    C2] PKRU: 55555554
[  828.669195][    C2] Call Trace:
[  828.669200][    C2]  <TASK>
[ 828.669203][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 828.669207][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 828.669211][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 828.669215][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 828.669222][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 828.669225][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 828.669228][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 828.669231][ C2] ? xa_store (lib/xarray.c:1734) 
[ 828.669237][ C2] xa_store (lib/xarray.c:1734) 
[ 828.669242][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 828.669247][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 828.669252][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 828.669255][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 828.669257][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 828.669263][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 828.669266][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 828.669273][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 828.669277][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 828.669281][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 828.669288][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 828.669293][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 828.669300][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 828.669304][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 828.669310][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 828.669315][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 828.669318][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 828.669323][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 828.669326][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 828.669330][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 828.669336][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 828.669340][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 828.669345][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  828.669350][    C2] RIP: 0033:0x7f439756d93b
[ 828.669354][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  828.669357][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  828.669360][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  828.669362][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  828.669364][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  828.669366][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  828.669367][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 840.669139][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 840.669149][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 840.669152][ C1] softirqs last disabled at (0): 0x0 
| [  840.669165][    C1] Tainted: [L]=SOFTLOCKUP
[  840.669167][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 840.669170][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 840.669177][ C1] Code: 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 <48> 01 f0 55 53 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe
All code
========
   0:	0f 1f 40 00          	nopl   0x0(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	48 85 f6             	test   %rsi,%rsi
  1b:	0f 84 5e 01 00 00    	je     0x17f
  21:	48 89 f8             	mov    %rdi,%rax
  24:	41 54                	push   %r12
  26:	44 0f b6 c2          	movzbl %dl,%r8d
  2a:*	48 01 f0             	add    %rsi,%rax		<-- trapping instruction
  2d:	55                   	push   %rbp
  2e:	53                   	push   %rbx
  2f:	72 14                	jb     0x45
  31:	eb 26                	jmp    0x59
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  3d:	ff ff fe 

Code starting with the faulting instruction
===========================================
   0:	48 01 f0             	add    %rsi,%rax
   3:	55                   	push   %rbp
   4:	53                   	push   %rbx
   5:	72 14                	jb     0x1b
   7:	eb 26                	jmp    0x2f
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  13:	ff ff fe 
[  840.669179][    C1] RSP: 0018:ffffc900034b7a08 EFLAGS: 00000202
[  840.669182][    C1] RAX: ffffffffbbee5c00 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  840.669185][    C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  840.669187][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  840.669189][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[  840.669191][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[  840.669192][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[  840.669195][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  840.669199][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[  840.669201][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  840.669202][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  840.669203][    C1] PKRU: 55555554
[  840.669205][    C1] Call Trace:
[  840.669208][    C1]  <TASK>
[ 840.669211][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 840.669222][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 840.669225][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 840.669230][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 840.669234][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 840.669241][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 840.669245][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 840.669247][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 840.669250][ C1] ? xa_store (lib/xarray.c:1734) 
[ 840.669257][ C1] xa_store (lib/xarray.c:1734) 
[ 840.669262][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 840.669268][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 840.669273][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 840.669276][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 840.669279][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 840.669285][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 840.669289][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 840.669296][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 840.669300][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 840.669305][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 840.669312][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 840.669317][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 840.669327][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 840.669331][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 840.669337][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 840.669342][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 840.669345][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 840.669350][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 840.669353][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 840.669357][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 840.669364][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 840.669368][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 840.669374][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  840.669379][    C1] RIP: 0033:0x7f439756d93b
[ 840.669383][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  840.669385][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  840.669388][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  840.669390][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  840.669392][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[  840.669393][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  840.669395][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 840.670127][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 840.670133][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 840.670136][ C3] softirqs last disabled at (0): 0x0 
| [  840.670146][    C3] Tainted: [L]=SOFTLOCKUP
[  840.670148][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 840.670149][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 840.670155][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  840.670158][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[  840.670161][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  840.670163][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  840.670164][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  840.670166][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  840.670168][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  840.670170][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  840.670172][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  840.670175][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  840.670177][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  840.670178][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  840.670180][    C3] PKRU: 55555554
[  840.670181][    C3] Call Trace:
[  840.670184][    C3]  <IRQ>
[ 840.670185][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 840.670191][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 840.670196][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 840.670199][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 840.670204][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 840.670210][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 840.670213][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 840.670217][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 840.670220][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 840.670223][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 840.670225][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 840.670228][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 840.670230][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 840.670235][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 840.670239][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 840.670242][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 840.670245][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 840.670250][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 840.670255][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 840.670260][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 840.670264][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 840.670269][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 840.670273][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 840.670276][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 840.670279][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 840.670282][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 840.670286][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 840.670288][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 840.670294][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 840.670297][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 840.670300][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 840.670304][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 840.670308][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 840.670311][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 840.670314][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 840.670317][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 840.670320][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 840.670324][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 840.670329][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 840.670332][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 840.670337][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 840.670342][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 840.670345][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 840.670350][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 840.670354][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 840.670360][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 840.670364][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 840.670367][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  840.670371][    C3]  </IRQ>
[  840.670372][    C3]  <TASK>
[ 840.670374][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 840.670378][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 840.670382][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  840.670384][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  840.670387][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  840.670389][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  840.670391][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  840.670393][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  840.670395][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 840.670399][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 840.670404][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 840.670410][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 840.670413][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 840.670418][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 840.670421][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 840.670425][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 840.670427][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 840.670433][ C3] xas_alloc (lib/xarray.c:378) 
[ 840.670437][ C3] xas_create (lib/xarray.c:685) 
[ 840.670443][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 840.670447][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 840.670451][ C3] __xa_store (lib/xarray.c:1703) 
[ 840.670455][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 840.670459][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 840.670462][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 840.670465][ C3] ? xa_store (lib/xarray.c:1734) 
[ 840.670470][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 840.670473][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 840.670476][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 840.670481][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 840.670484][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 840.670487][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 840.670491][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 840.670494][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 840.670499][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 840.670503][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 840.670507][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 840.670511][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 840.670515][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 840.670522][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 840.670526][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 840.670531][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 840.670535][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 840.670539][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 840.670542][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 840.670545][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 840.670548][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 840.670554][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 840.670557][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 840.670562][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  840.670565][    C3] RIP: 0033:0x7f439756d93b
[ 840.670569][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  840.670572][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  840.670574][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  840.670576][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  840.670578][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  840.670579][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  840.670581][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 852.656136][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 852.656144][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 852.656147][ C0] softirqs last disabled at (0): 0x0 
| [  852.656160][    C0] Tainted: [L]=SOFTLOCKUP
[  852.656161][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 852.656164][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 852.656173][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  852.656176][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[  852.656180][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  852.656182][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  852.656184][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  852.656186][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[  852.656188][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[  852.656190][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[  852.656192][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  852.656196][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[  852.656197][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  852.656199][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  852.656200][    C0] PKRU: 55555554
[  852.656201][    C0] Call Trace:
[  852.656205][    C0]  <TASK>
[ 852.656209][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 852.656213][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 852.656218][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 852.656223][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 852.656230][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 852.656234][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 852.656237][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 852.656240][ C0] ? xa_store (lib/xarray.c:1734) 
[ 852.656247][ C0] xa_store (lib/xarray.c:1734) 
[ 852.656251][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 852.656257][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 852.656262][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 852.656265][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 852.656268][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 852.656275][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 852.656279][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 852.656286][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 852.656290][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 852.656295][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 852.656303][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 852.656307][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 852.656316][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 852.656320][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 852.656326][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 852.656331][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 852.656334][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 852.656340][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 852.656343][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 852.656346][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 852.656354][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 852.656357][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 852.656363][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  852.656369][    C0] RIP: 0033:0x7f439756d93b
[ 852.656373][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  852.656376][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  852.656379][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  852.656381][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  852.656383][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[  852.656385][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  852.656387][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 856.669143][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 856.669153][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 856.669156][ C2] softirqs last disabled at (0): 0x0 
| [  856.669169][    C2] Tainted: [L]=SOFTLOCKUP
[  856.669171][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 856.669173][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 856.669183][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  856.669186][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[  856.669189][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  856.669191][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  856.669193][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  856.669195][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[  856.669197][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[  856.669199][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[  856.669202][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  856.669205][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[  856.669207][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  856.669208][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  856.669210][    C2] PKRU: 55555554
[  856.669211][    C2] Call Trace:
[  856.669216][    C2]  <TASK>
[ 856.669220][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 856.669224][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 856.669230][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 856.669234][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 856.669241][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 856.669245][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 856.669248][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 856.669250][ C2] ? xa_store (lib/xarray.c:1734) 
[ 856.669257][ C2] xa_store (lib/xarray.c:1734) 
[ 856.669262][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 856.669268][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 856.669273][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 856.669276][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 856.669279][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 856.669285][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 856.669289][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 856.669296][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 856.669300][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 856.669305][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 856.669312][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 856.669317][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 856.669326][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 856.669330][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 856.669336][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 856.669341][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 856.669345][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 856.669350][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 856.669353][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 856.669356][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 856.669364][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 856.669368][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 856.669374][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  856.669379][    C2] RIP: 0033:0x7f439756d93b
[ 856.669385][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  856.669388][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  856.669391][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  856.669393][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  856.669395][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  856.669397][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  856.669399][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 868.669141][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 868.669151][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 868.669155][ C1] softirqs last disabled at (0): 0x0 
| [  868.669167][    C1] Tainted: [L]=SOFTLOCKUP
[  868.669169][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 868.669172][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 868.669182][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  868.669185][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[  868.669189][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  868.669191][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  868.669193][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  868.669195][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[  868.669197][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[  868.669199][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[  868.669201][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  868.669204][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[  868.669206][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  868.669208][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  868.669209][    C1] PKRU: 55555554
[  868.669210][    C1] Call Trace:
[  868.669215][    C1]  <TASK>
[ 868.669219][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 868.669222][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 868.669229][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 868.669233][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 868.669241][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 868.669245][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 868.669248][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 868.669250][ C1] ? xa_store (lib/xarray.c:1734) 
[ 868.669257][ C1] xa_store (lib/xarray.c:1734) 
[ 868.669262][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 868.669269][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 868.669274][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 868.669277][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 868.669279][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 868.669287][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 868.669290][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 868.669297][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 868.669301][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 868.669306][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 868.669314][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 868.669318][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 868.669327][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 868.669331][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 868.669338][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 868.669343][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 868.669346][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 868.669351][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 868.669354][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 868.669358][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 868.669366][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 868.669369][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 868.669376][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  868.669381][    C1] RIP: 0033:0x7f439756d93b
[ 868.669387][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  868.669389][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  868.669392][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  868.669394][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  868.669396][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[  868.669398][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  868.669400][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 868.670127][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 868.670133][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 868.670136][ C3] softirqs last disabled at (0): 0x0 
| [  868.670147][    C3] Tainted: [L]=SOFTLOCKUP
[  868.670148][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 868.670150][ C3] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 868.670156][ C3] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[  868.670159][    C3] RSP: 0018:ffffc90000270a40 EFLAGS: 00000202
[  868.670162][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  868.670164][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  868.670166][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  868.670168][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  868.670170][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  868.670172][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  868.670174][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  868.670178][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  868.670179][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  868.670181][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  868.670182][    C3] PKRU: 55555554
[  868.670183][    C3] Call Trace:
[  868.670186][    C3]  <IRQ>
[ 868.670188][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 868.670193][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 868.670198][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 868.670203][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 868.670206][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 868.670211][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 868.670216][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 868.670220][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 868.670223][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 868.670226][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 868.670230][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 868.670232][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 868.670235][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 868.670237][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 868.670242][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 868.670246][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 868.670249][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 868.670252][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 868.670257][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 868.670261][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 868.670267][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 868.670270][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 868.670276][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 868.670281][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 868.670284][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 868.670287][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 868.670290][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 868.670293][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 868.670296][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 868.670302][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 868.670304][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 868.670307][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 868.670312][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 868.670316][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 868.670319][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 868.670322][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 868.670325][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 868.670329][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 868.670333][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 868.670337][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 868.670340][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 868.670345][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 868.670349][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 868.670352][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 868.670357][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 868.670361][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 868.670367][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 868.670371][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 868.670374][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  868.670378][    C3]  </IRQ>
[  868.670380][    C3]  <TASK>
[ 868.670381][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 868.670386][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 868.670389][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  868.670391][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  868.670394][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  868.670396][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  868.670398][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  868.670400][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  868.670401][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 868.670405][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 868.670411][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 868.670417][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 868.670421][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 868.670425][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 868.670428][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 868.670432][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 868.670434][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 868.670439][ C3] xas_alloc (lib/xarray.c:378) 
[ 868.670444][ C3] xas_create (lib/xarray.c:685) 
[ 868.670450][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 868.670455][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 868.670458][ C3] __xa_store (lib/xarray.c:1703) 
[ 868.670462][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 868.670467][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 868.670469][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 868.670472][ C3] ? xa_store (lib/xarray.c:1734) 
[ 868.670477][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 868.670481][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 868.670484][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 868.670489][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 868.670492][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 868.670494][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 868.670498][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 868.670502][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 868.670506][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 868.670510][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 868.670515][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 868.670518][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 868.670523][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 868.670529][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 868.670533][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 868.670538][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 868.670541][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 868.670545][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 868.670548][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 868.670550][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 868.670553][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 868.670559][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 868.670563][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 868.670567][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  868.670570][    C3] RIP: 0033:0x7f439756d93b
[ 868.670574][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  868.670577][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  868.670580][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  868.670582][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  868.670584][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  868.670585][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  868.670587][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 880.656134][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 880.656143][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 880.656146][ C0] softirqs last disabled at (0): 0x0 
| [  880.656159][    C0] Tainted: [L]=SOFTLOCKUP
[  880.656161][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 880.656163][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 880.656171][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  880.656174][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[  880.656177][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  880.656179][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  880.656181][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  880.656184][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[  880.656186][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[  880.656188][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[  880.656190][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  880.656194][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[  880.656196][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  880.656198][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  880.656199][    C0] PKRU: 55555554
[  880.656200][    C0] Call Trace:
[  880.656204][    C0]  <TASK>
[ 880.656207][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 880.656211][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 880.656215][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 880.656220][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 880.656228][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 880.656231][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 880.656233][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 880.656236][ C0] ? xa_store (lib/xarray.c:1734) 
[ 880.656243][ C0] xa_store (lib/xarray.c:1734) 
[ 880.656248][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 880.656253][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 880.656258][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 880.656261][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 880.656264][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 880.656270][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 880.656274][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 880.656281][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 880.656285][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 880.656290][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 880.656297][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 880.656302][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 880.656310][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 880.656314][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 880.656320][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 880.656325][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 880.656328][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 880.656333][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 880.656337][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 880.656340][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 880.656347][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 880.656351][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 880.656357][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  880.656362][    C0] RIP: 0033:0x7f439756d93b
[ 880.656367][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  880.656369][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  880.656373][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  880.656375][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  880.656376][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[  880.656379][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  880.656380][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 884.669142][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 884.669152][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 884.669156][ C2] softirqs last disabled at (0): 0x0 
| [  884.669169][    C2] Tainted: [L]=SOFTLOCKUP
[  884.669171][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 884.669173][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 884.669183][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  884.669186][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[  884.669190][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  884.669192][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  884.669194][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  884.669196][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[  884.669198][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[  884.669200][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[  884.669202][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  884.669206][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[  884.669208][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  884.669209][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  884.669210][    C2] PKRU: 55555554
[  884.669212][    C2] Call Trace:
[  884.669216][    C2]  <TASK>
[ 884.669220][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 884.669225][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 884.669230][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 884.669234][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 884.669242][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 884.669246][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 884.669249][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 884.669252][ C2] ? xa_store (lib/xarray.c:1734) 
[ 884.669259][ C2] xa_store (lib/xarray.c:1734) 
[ 884.669263][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 884.669269][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 884.669274][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 884.669277][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 884.669280][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 884.669287][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 884.669290][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 884.669298][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 884.669302][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 884.669306][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 884.669314][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 884.669319][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 884.669328][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 884.669332][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 884.669339][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 884.669344][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 884.669347][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 884.669352][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 884.669356][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 884.669359][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 884.669367][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 884.669371][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 884.669376][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  884.669382][    C2] RIP: 0033:0x7f439756d93b
[ 884.669387][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  884.669389][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  884.669392][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  884.669394][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  884.669396][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  884.669398][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  884.669400][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [  892.052072][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [  892.052357][    C3] Sending NMI from CPU 3 to CPUs 1:
| [  892.052595][    C1] NMI backtrace for cpu 1
| [  892.052610][    C1] Tainted: [L]=SOFTLOCKUP
[  892.052612][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 892.052614][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 892.052623][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  892.052626][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[  892.052629][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  892.052631][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  892.052633][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  892.052635][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[  892.052638][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[  892.052639][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[  892.052642][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  892.052645][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[  892.052647][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  892.052648][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  892.052650][    C1] PKRU: 55555554
[  892.052651][    C1] Call Trace:
[  892.052653][    C1]  <TASK>
[ 892.052656][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 892.052660][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 892.052665][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 892.052668][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 892.052676][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 892.052679][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 892.052682][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 892.052685][ C1] ? xa_store (lib/xarray.c:1734) 
[ 892.052692][ C1] xa_store (lib/xarray.c:1734) 
[ 892.052696][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 892.052702][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 892.052707][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 892.052710][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 892.052713][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 892.052718][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 892.052721][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 892.052729][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 892.052733][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 892.052738][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 892.052745][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 892.052749][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 892.052757][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 892.052761][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 892.052768][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 892.052775][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 892.052778][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 892.052783][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 892.052786][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 892.052790][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 892.052798][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 892.052802][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 892.052808][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  892.052812][    C1] RIP: 0033:0x7f439756d93b
[ 892.052817][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  892.052820][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  892.052823][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  892.052825][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  892.052827][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[  892.052829][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  892.052830][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [  892.052829][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [  892.052830][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [  892.052836][    C1]  </TASK>
| [  892.053597][    C3] Tainted: [L]=SOFTLOCKUP
[  892.053598][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 892.053600][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 892.053605][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  892.053608][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[  892.053611][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  892.053613][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  892.053615][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  892.053616][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  892.053618][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  892.053620][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  892.053623][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  892.053626][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  892.053628][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  892.053630][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  892.053631][    C3] PKRU: 55555554
[  892.053632][    C3] Call Trace:
[  892.053634][    C3]  <IRQ>
[ 892.053635][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 892.053641][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 892.053646][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 892.053649][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 892.053653][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 892.053658][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 892.053661][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 892.053665][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 892.053668][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 892.053671][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 892.053674][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 892.053676][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 892.053679][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 892.053684][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 892.053687][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 892.053690][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 892.053693][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 892.053699][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 892.053702][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 892.053708][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 892.053712][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 892.053717][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 892.053721][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 892.053724][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 892.053727][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 892.053730][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 892.053733][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 892.053735][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 892.053742][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 892.053745][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 892.053748][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 892.053752][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 892.053756][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 892.053759][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 892.053761][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 892.053765][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 892.053768][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 892.053773][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 892.053777][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 892.053779][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 892.053784][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 892.053788][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 892.053792][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 892.053797][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 892.053801][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 892.053806][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 892.053809][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 892.053813][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  892.053816][    C3]  </IRQ>
[  892.053817][    C3]  <TASK>
[ 892.053818][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 892.053822][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 892.053825][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  892.053827][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  892.053830][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  892.053831][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  892.053833][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  892.053834][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  892.053836][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 892.053840][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 892.053845][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 892.053850][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 892.053854][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 892.053858][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 892.053861][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 892.053865][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 892.053867][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 892.053872][ C3] xas_alloc (lib/xarray.c:378) 
[ 892.053877][ C3] xas_create (lib/xarray.c:685) 
[ 892.053883][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 892.053887][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 892.053890][ C3] __xa_store (lib/xarray.c:1703) 
[ 892.053894][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 892.053899][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 892.053901][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 892.053904][ C3] ? xa_store (lib/xarray.c:1734) 
[ 892.053909][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 892.053912][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 892.053915][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 892.053920][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 892.053922][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 892.053925][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 892.053929][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 892.053932][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 892.053936][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 892.053940][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 892.053944][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 892.053948][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 892.053952][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 892.053958][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 892.053961][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 892.053966][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 892.053970][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 892.053973][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 892.053977][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 892.053979][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 892.053982][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 892.053988][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 892.053991][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 892.053996][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  892.053999][    C3] RIP: 0033:0x7f439756d93b
[ 892.054003][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  892.054005][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  892.054008][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  892.054009][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  892.054011][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  892.054012][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  892.054014][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 908.656136][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 908.656144][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 908.656148][ C0] softirqs last disabled at (0): 0x0 
| [  908.656160][    C0] Tainted: [L]=SOFTLOCKUP
[  908.656162][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 908.656164][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 908.656174][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  908.656177][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[  908.656180][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  908.656182][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  908.656184][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  908.656186][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[  908.656188][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[  908.656190][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[  908.656192][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  908.656196][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[  908.656198][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  908.656199][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  908.656201][    C0] PKRU: 55555554
[  908.656202][    C0] Call Trace:
[  908.656206][    C0]  <TASK>
[ 908.656209][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 908.656213][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 908.656218][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 908.656223][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 908.656231][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 908.656234][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 908.656237][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 908.656240][ C0] ? xa_store (lib/xarray.c:1734) 
[ 908.656247][ C0] xa_store (lib/xarray.c:1734) 
[ 908.656251][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 908.656257][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 908.656262][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 908.656265][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 908.656267][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 908.656274][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 908.656277][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 908.656285][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 908.656288][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 908.656294][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 908.656301][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 908.656305][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 908.656314][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 908.656318][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 908.656325][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 908.656330][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 908.656333][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 908.656338][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 908.656341][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 908.656345][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 908.656352][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 908.656356][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 908.656362][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  908.656367][    C0] RIP: 0033:0x7f439756d93b
[ 908.656370][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  908.656373][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  908.656376][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  908.656378][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  908.656380][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[  908.656382][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  908.656384][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 912.669144][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 912.669155][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 912.669159][ C2] softirqs last disabled at (0): 0x0 
| [  912.669173][    C2] Tainted: [L]=SOFTLOCKUP
[  912.669175][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 912.669178][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 912.669188][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  912.669191][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[  912.669194][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  912.669196][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  912.669198][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  912.669200][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[  912.669202][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[  912.669204][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[  912.669206][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  912.669210][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[  912.669212][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  912.669213][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  912.669214][    C2] PKRU: 55555554
[  912.669216][    C2] Call Trace:
[  912.669220][    C2]  <TASK>
[ 912.669225][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 912.669229][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 912.669234][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 912.669239][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 912.669247][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 912.669251][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 912.669254][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 912.669257][ C2] ? xa_store (lib/xarray.c:1734) 
[ 912.669264][ C2] xa_store (lib/xarray.c:1734) 
[ 912.669269][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 912.669275][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 912.669284][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 912.669289][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 912.669291][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 912.669298][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 912.669301][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 912.669310][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 912.669313][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 912.669318][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 912.669326][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 912.669330][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 912.669340][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 912.669344][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 912.669351][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 912.669356][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 912.669359][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 912.669364][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 912.669367][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 912.669371][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 912.669378][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 912.669382][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 912.669387][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  912.669393][    C2] RIP: 0033:0x7f439756d93b
[ 912.669398][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  912.669400][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  912.669404][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  912.669406][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  912.669407][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  912.669409][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  912.669411][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 916.669139][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 916.669149][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 916.669153][ C1] softirqs last disabled at (0): 0x0 
| [  916.669166][    C1] Tainted: [L]=SOFTLOCKUP
[  916.669167][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 916.669170][ C1] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 916.669178][ C1] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[  916.669181][    C1] RSP: 0018:ffffc900034b7a10 EFLAGS: 00000202
[  916.669184][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  916.669186][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  916.669188][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  916.669189][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[  916.669192][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[  916.669194][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[  916.669196][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  916.669199][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[  916.669201][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  916.669203][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  916.669204][    C1] PKRU: 55555554
[  916.669205][    C1] Call Trace:
[  916.669210][    C1]  <TASK>
[ 916.669212][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 916.669224][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 916.669227][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 916.669233][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 916.669237][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 916.669245][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 916.669248][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 916.669251][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 916.669254][ C1] ? xa_store (lib/xarray.c:1734) 
[ 916.669261][ C1] xa_store (lib/xarray.c:1734) 
[ 916.669265][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 916.669271][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 916.669276][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 916.669279][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 916.669282][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 916.669289][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 916.669292][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 916.669300][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 916.669304][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 916.669309][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 916.669316][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 916.669321][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 916.669329][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 916.669333][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 916.669340][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 916.669345][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 916.669349][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 916.669354][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 916.669357][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 916.669361][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 916.669368][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 916.669372][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 916.669378][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  916.669384][    C1] RIP: 0033:0x7f439756d93b
[ 916.669390][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  916.669392][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  916.669395][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  916.669397][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  916.669399][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[  916.669401][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  916.669403][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 916.670129][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 916.670136][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 916.670139][ C3] softirqs last disabled at (0): 0x0 
| [  916.670150][    C3] Tainted: [L]=SOFTLOCKUP
[  916.670151][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 916.670153][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:104 kernel/locking/qspinlock.c:141) 
[ 916.670159][ C3] Code: c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44 24 40 <85> c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00 00 e8 60 b8 c7 fd be
All code
========
   0:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   4:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
   a:	48 89 ef             	mov    %rbp,%rdi
   d:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86f
  12:	41 0f b6 06          	movzbl (%r14),%eax
  16:	41 38 c5             	cmp    %al,%r13b
  19:	7c 08                	jl     0x23
  1b:	84 c0                	test   %al,%al
  1d:	0f 85 8d 07 00 00    	jne    0x7b0
  23:	8b 45 00             	mov    0x0(%rbp),%eax
  26:	89 44 24 40          	mov    %eax,0x40(%rsp)
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 6e 01 00 00    	jne    0x1a0
  32:	48 89 ef             	mov    %rbp,%rdi
  35:	be 04 00 00 00       	mov    $0x4,%esi
  3a:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b89f
  3f:	be                   	.byte 0xbe

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 6e 01 00 00    	jne    0x176
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	be 04 00 00 00       	mov    $0x4,%esi
  10:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b875
  15:	be                   	.byte 0xbe
[  916.670162][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000246
[  916.670165][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  916.670167][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  916.670169][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  916.670171][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  916.670173][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  916.670175][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  916.670177][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  916.670181][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  916.670183][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  916.670184][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  916.670185][    C3] PKRU: 55555554
[  916.670187][    C3] Call Trace:
[  916.670189][    C3]  <IRQ>
[ 916.670191][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 916.670197][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 916.670203][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 916.670206][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 916.670212][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 916.670217][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 916.670220][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 916.670224][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 916.670227][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 916.670231][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 916.670233][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 916.670236][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 916.670238][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 916.670243][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 916.670248][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 916.670251][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 916.670254][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 916.670259][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 916.670264][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 916.670269][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 916.670274][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 916.670279][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 916.670284][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 916.670287][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 916.670290][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 916.670294][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 916.670297][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 916.670300][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 916.670307][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 916.670310][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 916.670313][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 916.670318][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 916.670322][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 916.670326][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 916.670328][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 916.670332][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 916.670336][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 916.670340][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 916.670345][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 916.670347][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 916.670353][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 916.670357][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 916.670361][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 916.670365][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 916.670370][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 916.670376][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 916.670379][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 916.670383][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  916.670387][    C3]  </IRQ>
[  916.670388][    C3]  <TASK>
[ 916.670389][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 916.670394][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 916.670397][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  916.670399][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  916.670402][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  916.670404][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  916.670406][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  916.670408][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  916.670409][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 916.670413][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 916.670419][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 916.670425][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 916.670429][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 916.670433][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 916.670436][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 916.670440][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 916.670442][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 916.670447][ C3] xas_alloc (lib/xarray.c:378) 
[ 916.670452][ C3] xas_create (lib/xarray.c:685) 
[ 916.670459][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 916.670463][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 916.670467][ C3] __xa_store (lib/xarray.c:1703) 
[ 916.670471][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 916.670475][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 916.670478][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 916.670481][ C3] ? xa_store (lib/xarray.c:1734) 
[ 916.670487][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 916.670490][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 916.670493][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 916.670499][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 916.670502][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 916.670504][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 916.670508][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 916.670511][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 916.670516][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 916.670519][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 916.670524][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 916.670528][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 916.670532][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 916.670539][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 916.670542][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 916.670547][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 916.670552][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 916.670555][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 916.670558][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 916.670561][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 916.670564][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 916.670570][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 916.670573][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 916.670578][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  916.670581][    C3] RIP: 0033:0x7f439756d93b
[ 916.670585][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  916.670587][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  916.670590][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  916.670592][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  916.670594][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  916.670596][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  916.670597][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 936.656135][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 936.656144][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 936.656148][ C0] softirqs last disabled at (0): 0x0 
| [  936.656160][    C0] Tainted: [L]=SOFTLOCKUP
[  936.656162][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 936.656164][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 936.656173][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  936.656176][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[  936.656179][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  936.656182][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  936.656184][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  936.656185][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[  936.656187][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[  936.656190][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[  936.656192][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  936.656196][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[  936.656198][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  936.656199][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  936.656200][    C0] PKRU: 55555554
[  936.656202][    C0] Call Trace:
[  936.656205][    C0]  <TASK>
[ 936.656209][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 936.656213][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 936.656217][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 936.656222][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 936.656229][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 936.656233][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 936.656235][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 936.656238][ C0] ? xa_store (lib/xarray.c:1734) 
[ 936.656245][ C0] xa_store (lib/xarray.c:1734) 
[ 936.656249][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 936.656255][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 936.656260][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 936.656262][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 936.656265][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 936.656272][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 936.656275][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 936.656283][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 936.656286][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 936.656291][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 936.656298][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 936.656303][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 936.656311][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 936.656315][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 936.656322][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 936.656327][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 936.656331][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 936.656336][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 936.656339][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 936.656343][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 936.656349][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 936.656353][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 936.656359][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  936.656364][    C0] RIP: 0033:0x7f439756d93b
[ 936.656376][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  936.656378][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  936.656382][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  936.656384][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  936.656386][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[  936.656387][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  936.656389][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 940.669143][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 940.669153][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 940.669157][ C2] softirqs last disabled at (0): 0x0 
| [  940.669171][    C2] Tainted: [L]=SOFTLOCKUP
[  940.669173][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 940.669176][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 940.669184][ C2] Code: 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 7b 44 8d ff       	jmp    0xffffffffff8d4482
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[  940.669187][    C2] RSP: 0018:ffffc900034d7a10 EFLAGS: 00000202
[  940.669190][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  940.669193][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  940.669195][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  940.669197][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[  940.669198][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[  940.669201][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[  940.669203][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  940.669207][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[  940.669209][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  940.669210][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  940.669211][    C2] PKRU: 55555554
[  940.669212][    C2] Call Trace:
[  940.669218][    C2]  <TASK>
[ 940.669220][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 940.669231][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 940.669234][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 940.669240][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 940.669244][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 940.669251][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 940.669254][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 940.669257][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 940.669260][ C2] ? xa_store (lib/xarray.c:1734) 
[ 940.669267][ C2] xa_store (lib/xarray.c:1734) 
[ 940.669272][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 940.669278][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 940.669283][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 940.669286][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 940.669289][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 940.669296][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 940.669299][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 940.669307][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 940.669311][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 940.669316][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 940.669323][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 940.669328][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 940.669337][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 940.669341][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 940.669348][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 940.669353][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 940.669356][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 940.669362][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 940.669365][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 940.669368][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 940.669376][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 940.669380][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 940.669385][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  940.669391][    C2] RIP: 0033:0x7f439756d93b
[ 940.669396][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  940.669399][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  940.669402][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  940.669404][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  940.669406][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  940.669408][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  940.669410][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 944.669162][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 944.669178][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 944.669182][ C1] softirqs last disabled at (0): 0x0 
| [  944.669201][    C1] Tainted: [L]=SOFTLOCKUP
[  944.669202][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 944.669207][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 944.669221][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  944.669225][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[  944.669229][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  944.669232][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  944.669234][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  944.669236][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[  944.669238][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[  944.669240][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[  944.669243][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  944.669248][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[  944.669250][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  944.669251][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  944.669253][    C1] PKRU: 55555554
[  944.669254][    C1] Call Trace:
[  944.669261][    C1]  <TASK>
[ 944.669266][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 944.669270][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 944.669277][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 944.669282][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 944.669291][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 944.669296][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 944.669299][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 944.669302][ C1] ? xa_store (lib/xarray.c:1734) 
[ 944.669311][ C1] xa_store (lib/xarray.c:1734) 
[ 944.669316][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 944.669325][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 944.669330][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 944.669334][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 944.669337][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 944.669346][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 944.669350][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 944.669360][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 944.669364][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 944.669370][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 944.669378][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 944.669384][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 944.669395][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 944.669400][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 944.669408][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 944.669413][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 944.669417][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 944.669424][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 944.669428][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 944.669432][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 944.669442][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 944.669446][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 944.669455][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  944.669464][    C1] RIP: 0033:0x7f439756d93b
[ 944.669469][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  944.669473][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  944.669477][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  944.669479][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  944.669481][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[  944.669483][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  944.669484][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 944.670126][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 944.670133][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 944.670136][ C3] softirqs last disabled at (0): 0x0 
| [  944.670146][    C3] Tainted: [L]=SOFTLOCKUP
[  944.670148][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 944.670150][ C3] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 944.670155][ C3] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[  944.670159][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[  944.670161][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  944.670163][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  944.670165][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  944.670167][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  944.670169][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  944.670171][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  944.670174][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  944.670177][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  944.670179][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  944.670180][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  944.670182][    C3] PKRU: 55555554
[  944.670183][    C3] Call Trace:
[  944.670185][    C3]  <IRQ>
[ 944.670187][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 944.670193][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 944.670198][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 944.670201][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 944.670205][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 944.670210][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 944.670213][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 944.670216][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 944.670219][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 944.670223][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 944.670225][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 944.670228][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 944.670231][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 944.670236][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 944.670240][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 944.670243][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 944.670247][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 944.670253][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 944.670257][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 944.670263][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 944.670268][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 944.670274][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 944.670279][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 944.670282][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 944.670285][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 944.670289][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 944.670292][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 944.670295][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 944.670301][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 944.670303][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 944.670306][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 944.670311][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 944.670315][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 944.670318][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 944.670321][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 944.670325][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 944.670329][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 944.670333][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 944.670338][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 944.670341][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 944.670347][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 944.670351][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 944.670355][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 944.670359][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 944.670364][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 944.670371][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 944.670375][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 944.670378][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  944.670382][    C3]  </IRQ>
[  944.670383][    C3]  <TASK>
[ 944.670385][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 944.670390][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 944.670393][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  944.670396][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  944.670399][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  944.670401][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  944.670403][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  944.670405][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  944.670407][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 944.670411][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 944.670417][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 944.670422][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 944.670426][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 944.670430][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 944.670433][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 944.670438][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 944.670440][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 944.670446][ C3] xas_alloc (lib/xarray.c:378) 
[ 944.670451][ C3] xas_create (lib/xarray.c:685) 
[ 944.670458][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 944.670463][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 944.670467][ C3] __xa_store (lib/xarray.c:1703) 
[ 944.670472][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 944.670476][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 944.670479][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 944.670482][ C3] ? xa_store (lib/xarray.c:1734) 
[ 944.670487][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 944.670491][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 944.670494][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 944.670499][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 944.670501][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 944.670504][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 944.670508][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 944.670511][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 944.670516][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 944.670520][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 944.670524][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 944.670528][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 944.670532][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 944.670539][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 944.670543][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 944.670547][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 944.670552][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 944.670555][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 944.670559][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 944.670561][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 944.670565][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 944.670570][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 944.670574][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 944.670579][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  944.670582][    C3] RIP: 0033:0x7f439756d93b
[ 944.670585][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  944.670587][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  944.670590][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  944.670592][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  944.670594][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  944.670595][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  944.670597][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 964.656139][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 964.656147][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 964.656151][ C0] softirqs last disabled at (0): 0x0 
| [  964.656162][    C0] Tainted: [L]=SOFTLOCKUP
[  964.656164][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 964.656166][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 964.656176][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  964.656179][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[  964.656187][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  964.656189][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  964.656191][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  964.656194][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[  964.656196][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[  964.656198][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[  964.656201][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  964.656205][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[  964.656207][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  964.656209][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  964.656210][    C0] PKRU: 55555554
[  964.656212][    C0] Call Trace:
[  964.656216][    C0]  <TASK>
[ 964.656220][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 964.656224][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 964.656229][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 964.656233][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 964.656241][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 964.656245][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 964.656247][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 964.656250][ C0] ? xa_store (lib/xarray.c:1734) 
[ 964.656258][ C0] xa_store (lib/xarray.c:1734) 
[ 964.656263][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 964.656269][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 964.656274][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 964.656277][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 964.656280][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 964.656287][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 964.656291][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 964.656298][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 964.656302][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 964.656307][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 964.656314][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 964.656319][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 964.656328][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 964.656332][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 964.656339][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 964.656344][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 964.656347][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 964.656352][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 964.656356][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 964.656360][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 964.656366][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 964.656371][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 964.656376][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  964.656381][    C0] RIP: 0033:0x7f439756d93b
[ 964.656385][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  964.656388][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  964.656392][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  964.656394][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  964.656396][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[  964.656398][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  964.656400][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 968.669135][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 968.669143][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 968.669147][ C2] softirqs last disabled at (0): 0x0 
| [  968.669160][    C2] Tainted: [L]=SOFTLOCKUP
[  968.669161][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 968.669164][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 968.669172][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  968.669175][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[  968.669178][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  968.669181][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  968.669183][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  968.669185][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[  968.669187][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[  968.669189][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[  968.669192][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  968.669196][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[  968.669198][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  968.669200][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  968.669201][    C2] PKRU: 55555554
[  968.669202][    C2] Call Trace:
[  968.669207][    C2]  <TASK>
[ 968.669210][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 968.669214][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 968.669219][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 968.669223][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 968.669230][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 968.669233][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 968.669236][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 968.669240][ C2] ? xa_store (lib/xarray.c:1734) 
[ 968.669246][ C2] xa_store (lib/xarray.c:1734) 
[ 968.669250][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 968.669256][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 968.669261][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 968.669264][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 968.669267][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 968.669273][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 968.669276][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 968.669283][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 968.669287][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 968.669292][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 968.669298][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 968.669303][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 968.669311][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 968.669315][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 968.669321][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 968.669326][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 968.669330][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 968.669334][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 968.669337][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 968.669341][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 968.669347][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 968.669351][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 968.669356][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  968.669361][    C2] RIP: 0033:0x7f439756d93b
[ 968.669367][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  968.669370][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  968.669373][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  968.669376][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  968.669378][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  968.669380][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  968.669382][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [  970.066701][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [  970.066981][    C3] Sending NMI from CPU 3 to CPUs 1:
| [  970.067237][    C1] NMI backtrace for cpu 1
| [  970.067255][    C1] Tainted: [L]=SOFTLOCKUP
[  970.067257][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 970.067259][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 970.067267][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  970.067270][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[  970.067274][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  970.067277][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  970.067279][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  970.067281][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[  970.067283][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[  970.067285][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[  970.067287][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  970.067292][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[  970.067294][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  970.067295][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  970.067297][    C1] PKRU: 55555554
[  970.067298][    C1] Call Trace:
[  970.067301][    C1]  <TASK>
[ 970.067304][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 970.067308][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 970.067312][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 970.067316][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 970.067323][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 970.067327][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 970.067330][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 970.067333][ C1] ? xa_store (lib/xarray.c:1734) 
[ 970.067340][ C1] xa_store (lib/xarray.c:1734) 
[ 970.067344][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 970.067350][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 970.067356][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 970.067359][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 970.067361][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 970.067367][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 970.067370][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 970.067378][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 970.067382][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 970.067387][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 970.067394][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 970.067399][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 970.067407][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 970.067411][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 970.067417][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 970.067426][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 970.067430][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 970.067435][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 970.067438][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 970.067442][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 970.067450][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 970.067454][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 970.067460][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  970.067464][    C1] RIP: 0033:0x7f439756d93b
[ 970.067470][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  970.067473][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  970.067476][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  970.067479][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  970.067481][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[  970.067482][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  970.067484][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [  970.067482][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [  970.067484][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [  970.067490][    C1]  </TASK>
| [  970.068238][    C3] Tainted: [L]=SOFTLOCKUP
[  970.068240][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 970.068242][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 970.068247][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  970.068250][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[  970.068253][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  970.068255][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  970.068257][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  970.068259][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  970.068261][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  970.068263][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  970.068265][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  970.068269][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  970.068271][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  970.068273][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  970.068275][    C3] PKRU: 55555554
[  970.068276][    C3] Call Trace:
[  970.068278][    C3]  <IRQ>
[ 970.068279][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 970.068286][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 970.068291][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 970.068294][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 970.068298][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 970.068304][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 970.068308][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 970.068312][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 970.068315][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 970.068319][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 970.068322][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 970.068325][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 970.068328][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 970.068333][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 970.068336][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 970.068340][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 970.068344][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 970.068349][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 970.068353][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 970.068358][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 970.068362][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 970.068367][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 970.068372][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 970.068375][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 970.068378][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 970.068382][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 970.068385][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 970.068388][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 970.068395][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 970.068398][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 970.068401][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 970.068406][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 970.068409][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 970.068413][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 970.068416][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 970.068421][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 970.068424][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 970.068429][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 970.068433][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 970.068437][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 970.068442][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 970.068446][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 970.068449][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 970.068454][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 970.068457][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 970.068463][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 970.068467][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 970.068470][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  970.068473][    C3]  </IRQ>
[  970.068474][    C3]  <TASK>
[ 970.068476][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 970.068480][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 970.068483][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  970.068486][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  970.068488][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  970.068490][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  970.068491][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  970.068493][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  970.068495][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 970.068498][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 970.068504][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 970.068509][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 970.068513][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 970.068517][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 970.068520][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 970.068524][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 970.068526][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 970.068531][ C3] xas_alloc (lib/xarray.c:378) 
[ 970.068535][ C3] xas_create (lib/xarray.c:685) 
[ 970.068541][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 970.068545][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 970.068549][ C3] __xa_store (lib/xarray.c:1703) 
[ 970.068553][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 970.068557][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 970.068560][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 970.068563][ C3] ? xa_store (lib/xarray.c:1734) 
[ 970.068568][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 970.068572][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 970.068575][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 970.068580][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 970.068582][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 970.068585][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 970.068589][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 970.068592][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 970.068597][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 970.068600][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 970.068605][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 970.068609][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 970.068613][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 970.068620][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 970.068624][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 970.068629][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 970.068633][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 970.068637][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 970.068640][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 970.068643][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 970.068646][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 970.068652][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 970.068656][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 970.068660][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  970.068663][    C3] RIP: 0033:0x7f439756d93b
[ 970.068668][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  970.068670][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  970.068673][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  970.068675][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  970.068677][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  970.068679][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  970.068681][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 992.656137][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 992.656145][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 992.656149][ C0] softirqs last disabled at (0): 0x0 
| [  992.656162][    C0] Tainted: [L]=SOFTLOCKUP
[  992.656163][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 992.656166][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 992.656175][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  992.656179][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[  992.656182][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  992.656185][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  992.656187][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  992.656189][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[  992.656191][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[  992.656193][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[  992.656195][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  992.656200][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[  992.656202][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  992.656204][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  992.656205][    C0] PKRU: 55555554
[  992.656206][    C0] Call Trace:
[  992.656209][    C0]  <TASK>
[ 992.656212][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 992.656216][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 992.656221][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 992.656226][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 992.656234][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 992.656237][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 992.656240][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 992.656243][ C0] ? xa_store (lib/xarray.c:1734) 
[ 992.656250][ C0] xa_store (lib/xarray.c:1734) 
[ 992.656254][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 992.656260][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 992.656265][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 992.656268][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 992.656271][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 992.656278][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 992.656281][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 992.656289][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 992.656292][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 992.656298][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 992.656305][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 992.656310][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 992.656318][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 992.656322][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 992.656329][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 992.656334][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 992.656337][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 992.656342][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 992.656345][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 992.656349][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 992.656356][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 992.656361][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 992.656366][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  992.656371][    C0] RIP: 0033:0x7f439756d93b
[ 992.656376][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  992.656379][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  992.656382][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  992.656385][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  992.656387][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[  992.656389][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  992.656390][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 996.669139][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 996.669149][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 996.669152][ C1] softirqs last disabled at (0): 0x0 
| [  996.669166][    C1] Tainted: [L]=SOFTLOCKUP
[  996.669168][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 996.669170][ C1] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 996.669179][ C1] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[  996.669182][    C1] RSP: 0018:ffffc900034b7a10 EFLAGS: 00000202
[  996.669186][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  996.669188][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  996.669190][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  996.669192][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[  996.669194][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[  996.669196][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[  996.669199][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  996.669202][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[  996.669204][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  996.669205][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  996.669207][    C1] PKRU: 55555554
[  996.669208][    C1] Call Trace:
[  996.669213][    C1]  <TASK>
[ 996.669215][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 996.669227][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 996.669230][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 996.669236][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 996.669240][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 996.669247][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 996.669251][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 996.669254][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 996.669257][ C1] ? xa_store (lib/xarray.c:1734) 
[ 996.669264][ C1] xa_store (lib/xarray.c:1734) 
[ 996.669269][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 996.669275][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 996.669280][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 996.669283][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 996.669286][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 996.669293][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 996.669296][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 996.669304][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 996.669308][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 996.669313][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 996.669320][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 996.669325][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 996.669334][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 996.669338][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 996.669344][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 996.669349][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 996.669353][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 996.669358][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 996.669361][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 996.669365][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 996.669372][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 996.669376][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 996.669382][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  996.669387][    C1] RIP: 0033:0x7f439756d93b
[ 996.669391][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  996.669394][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  996.669398][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  996.669400][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  996.669402][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[  996.669404][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  996.669406][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 996.669441][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 996.669447][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 996.669451][ C2] softirqs last disabled at (0): 0x0 
| [  996.669462][    C2] Tainted: [L]=SOFTLOCKUP
[  996.669463][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 996.669465][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 996.669472][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  996.669475][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[  996.669478][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  996.669480][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  996.669482][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  996.669484][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[  996.669486][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[  996.669488][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[  996.669491][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  996.669494][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[  996.669496][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  996.669498][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  996.669499][    C2] PKRU: 55555554
[  996.669501][    C2] Call Trace:
[  996.669503][    C2]  <TASK>
[ 996.669506][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 996.669510][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 996.669515][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 996.669518][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 996.669524][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 996.669527][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 996.669530][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 996.669533][ C2] ? xa_store (lib/xarray.c:1734) 
[ 996.669539][ C2] xa_store (lib/xarray.c:1734) 
[ 996.669543][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 996.669548][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 996.669553][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 996.669555][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 996.669558][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 996.669564][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 996.669567][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 996.669573][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 996.669577][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 996.669582][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 996.669587][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 996.669591][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 996.669599][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 996.669603][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 996.669608][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 996.669612][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 996.669616][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 996.669620][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 996.669623][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 996.669627][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 996.669632][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 996.669636][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 996.669641][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  996.669645][    C2] RIP: 0033:0x7f439756d93b
[ 996.669650][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  996.669653][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  996.669656][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  996.669658][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  996.669660][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  996.669662][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  996.669664][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 996.670121][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 996.670127][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 996.670130][ C3] softirqs last disabled at (0): 0x0 
| [  996.670139][    C3] Tainted: [L]=SOFTLOCKUP
[  996.670141][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 996.670142][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 996.670148][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  996.670151][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[  996.670153][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[  996.670155][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[  996.670157][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[  996.670159][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[  996.670161][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[  996.670163][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[  996.670165][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  996.670169][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[  996.670171][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  996.670172][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  996.670173][    C3] PKRU: 55555554
[  996.670175][    C3] Call Trace:
[  996.670176][    C3]  <IRQ>
[ 996.670177][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 996.670183][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 996.670188][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 996.670191][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 996.670196][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 996.670200][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 996.670203][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 996.670207][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 996.670210][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 996.670214][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 996.670216][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 996.670219][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 996.670222][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 996.670227][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 996.670230][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 996.670233][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 996.670236][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 996.670242][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 996.670246][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 996.670252][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 996.670256][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 996.670260][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 996.670264][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 996.670268][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 996.670271][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 996.670274][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 996.670277][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 996.670280][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 996.670286][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 996.670289][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 996.670292][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 996.670297][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 996.670300][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 996.670303][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 996.670306][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 996.670310][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 996.670314][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 996.670317][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 996.670322][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 996.670324][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 996.670330][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 996.670334][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 996.670337][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 996.670342][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 996.670346][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 996.670352][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 996.670356][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 996.670359][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  996.670363][    C3]  </IRQ>
[  996.670364][    C3]  <TASK>
[ 996.670366][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 996.670370][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 996.670373][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[  996.670375][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[  996.670378][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[  996.670380][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[  996.670381][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[  996.670383][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[  996.670385][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 996.670389][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 996.670395][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 996.670401][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 996.670405][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 996.670409][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 996.670412][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 996.670416][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 996.670419][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 996.670424][ C3] xas_alloc (lib/xarray.c:378) 
[ 996.670429][ C3] xas_create (lib/xarray.c:685) 
[ 996.670435][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 996.670439][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 996.670443][ C3] __xa_store (lib/xarray.c:1703) 
[ 996.670447][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 996.670452][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 996.670454][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 996.670457][ C3] ? xa_store (lib/xarray.c:1734) 
[ 996.670462][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 996.670466][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 996.670469][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 996.670473][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 996.670476][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 996.670479][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 996.670483][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 996.670486][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 996.670491][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 996.670495][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 996.670499][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 996.670503][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 996.670507][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 996.670513][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 996.670516][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 996.670521][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 996.670525][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 996.670528][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 996.670531][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 996.670534][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 996.670537][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 996.670542][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 996.670546][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 996.670551][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  996.670554][    C3] RIP: 0033:0x7f439756d93b
[ 996.670556][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  996.670559][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[  996.670562][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[  996.670564][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[  996.670566][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[  996.670568][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[  996.670570][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1020.656136][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1020.656145][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1020.656149][ C0] softirqs last disabled at (0): 0x0 
| [ 1020.656162][    C0] Tainted: [L]=SOFTLOCKUP
[ 1020.656163][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1020.656165][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1020.656174][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1020.656177][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1020.656181][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1020.656183][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1020.656185][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1020.656187][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1020.656189][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1020.656191][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1020.656193][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1020.656198][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1020.656199][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1020.656201][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1020.656202][    C0] PKRU: 55555554
[ 1020.656204][    C0] Call Trace:
[ 1020.656207][    C0]  <TASK>
[ 1020.656211][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1020.656215][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1020.656220][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1020.656224][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1020.656232][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1020.656235][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1020.656238][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1020.656241][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1020.656247][ C0] xa_store (lib/xarray.c:1734) 
[ 1020.656252][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1020.656258][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1020.656263][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1020.656266][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1020.656268][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1020.656276][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1020.656280][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1020.656287][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1020.656290][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1020.656295][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1020.656303][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1020.656308][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1020.656316][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1020.656320][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1020.656326][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1020.656331][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1020.656335][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1020.656339][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1020.656343][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1020.656347][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1020.656354][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1020.656358][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1020.656364][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1020.656368][    C0] RIP: 0033:0x7f439756d93b
[ 1020.656373][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1020.656376][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1020.656379][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1020.656382][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1020.656383][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1020.656385][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1020.656387][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1024.669140][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1024.669151][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1024.669154][ C2] softirqs last disabled at (0): 0x0 
| [ 1024.669168][    C2] Tainted: [L]=SOFTLOCKUP
[ 1024.669171][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1024.669173][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1024.669183][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1024.669187][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1024.669190][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1024.669192][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1024.669195][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1024.669197][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1024.669199][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1024.669201][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1024.669203][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1024.669207][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1024.669209][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1024.669210][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1024.669212][    C2] PKRU: 55555554
[ 1024.669213][    C2] Call Trace:
[ 1024.669218][    C2]  <TASK>
[ 1024.669222][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1024.669226][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1024.669231][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1024.669236][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1024.669244][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1024.669248][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1024.669251][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1024.669254][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1024.669261][ C2] xa_store (lib/xarray.c:1734) 
[ 1024.669266][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1024.669272][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1024.669277][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1024.669280][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1024.669283][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1024.669290][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1024.669294][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1024.669301][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1024.669305][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1024.669311][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1024.669319][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1024.669324][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1024.669333][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1024.669337][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1024.669344][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1024.669349][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1024.669352][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1024.669358][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1024.669361][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1024.669365][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1024.669372][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1024.669376][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1024.669382][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1024.669387][    C2] RIP: 0033:0x7f439756d93b
[ 1024.669392][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1024.669395][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1024.669398][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1024.669400][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1024.669403][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1024.669405][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1024.669406][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1024.669440][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1024.669446][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1024.669450][ C1] softirqs last disabled at (0): 0x0 
| [ 1024.669461][    C1] Tainted: [L]=SOFTLOCKUP
[ 1024.669462][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1024.669464][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 1024.669470][ C1] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 1024.669473][    C1] RSP: 0018:ffffc900034b7a00 EFLAGS: 00000282
[ 1024.669476][    C1] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1024.669478][    C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1024.669480][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1024.669482][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1024.669484][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1024.669486][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1024.669488][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1024.669492][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1024.669493][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1024.669495][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1024.669497][    C1] PKRU: 55555554
[ 1024.669498][    C1] Call Trace:
[ 1024.669500][    C1]  <TASK>
[ 1024.669503][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1024.669509][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1024.669512][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1024.669516][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1024.669519][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1024.669525][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1024.669528][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1024.669531][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1024.669534][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1024.669539][ C1] xa_store (lib/xarray.c:1734) 
[ 1024.669544][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1024.669548][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1024.669553][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1024.669557][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1024.669559][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1024.669565][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1024.669568][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1024.669574][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1024.669578][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1024.669583][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1024.669587][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1024.669592][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1024.669600][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1024.669603][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1024.669608][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1024.669613][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1024.669616][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1024.669620][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1024.669623][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1024.669627][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1024.669633][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1024.669637][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1024.669641][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1024.669645][    C1] RIP: 0033:0x7f439756d93b
[ 1024.669650][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1024.669652][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1024.669656][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1024.669658][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1024.669660][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1024.669661][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1024.669663][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1024.670120][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1024.670126][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1024.670129][ C3] softirqs last disabled at (0): 0x0 
| [ 1024.670138][    C3] Tainted: [L]=SOFTLOCKUP
[ 1024.670139][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1024.670141][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1024.670145][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1024.670148][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1024.670151][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1024.670153][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1024.670155][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1024.670157][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1024.670159][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1024.670161][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1024.670163][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1024.670167][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1024.670169][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1024.670170][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1024.670172][    C3] PKRU: 55555554
[ 1024.670173][    C3] Call Trace:
[ 1024.670175][    C3]  <IRQ>
[ 1024.670176][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1024.670181][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1024.670186][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1024.670190][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1024.670195][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1024.670200][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1024.670203][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1024.670207][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1024.670210][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1024.670213][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1024.670216][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1024.670218][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1024.670221][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1024.670226][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1024.670229][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1024.670232][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1024.670235][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1024.670240][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1024.670244][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1024.670250][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1024.670254][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1024.670258][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1024.670262][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1024.670265][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1024.670268][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1024.670271][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1024.670275][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1024.670278][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1024.670283][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1024.670286][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1024.670290][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1024.670294][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1024.670298][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1024.670301][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1024.670304][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1024.670308][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1024.670311][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1024.670315][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1024.670320][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1024.670323][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1024.670328][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1024.670332][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1024.670335][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1024.670341][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1024.670345][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1024.670351][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1024.670354][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1024.670357][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1024.670362][    C3]  </IRQ>
[ 1024.670363][    C3]  <TASK>
[ 1024.670364][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1024.670368][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1024.670371][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1024.670374][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1024.670376][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1024.670378][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1024.670380][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1024.670382][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1024.670384][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1024.670388][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1024.670393][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1024.670398][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1024.670403][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1024.670407][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1024.670410][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1024.670414][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1024.670417][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1024.670422][ C3] xas_alloc (lib/xarray.c:378) 
[ 1024.670426][ C3] xas_create (lib/xarray.c:685) 
[ 1024.670432][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1024.670437][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1024.670441][ C3] __xa_store (lib/xarray.c:1703) 
[ 1024.670445][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1024.670449][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1024.670452][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1024.670455][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1024.670459][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1024.670463][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1024.670466][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1024.670471][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1024.670474][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1024.670476][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1024.670480][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1024.670484][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1024.670488][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1024.670492][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1024.670496][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1024.670500][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1024.670504][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1024.670511][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1024.670514][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1024.670519][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1024.670523][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1024.670526][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1024.670530][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1024.670532][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1024.670536][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1024.670541][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1024.670545][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1024.670550][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1024.670553][    C3] RIP: 0033:0x7f439756d93b
[ 1024.670556][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1024.670559][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1024.670561][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1024.670563][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1024.670565][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1024.670567][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1024.670569][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1048.079018][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 1048.079302][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 1048.079541][    C1] NMI backtrace for cpu 1
| [ 1048.079557][    C1] Tainted: [L]=SOFTLOCKUP
[ 1048.079559][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1048.079561][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1048.079569][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1048.079572][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1048.079577][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1048.079579][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1048.079581][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1048.079583][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1048.079585][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1048.079587][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1048.079590][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1048.079593][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1048.079595][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1048.079597][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1048.079599][    C1] PKRU: 55555554
[ 1048.079600][    C1] Call Trace:
[ 1048.079602][    C1]  <TASK>
[ 1048.079605][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1048.079610][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1048.079614][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1048.079618][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1048.079625][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1048.079628][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1048.079631][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1048.079634][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1048.079641][ C1] xa_store (lib/xarray.c:1734) 
[ 1048.079645][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1048.079650][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1048.079656][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1048.079659][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1048.079662][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1048.079667][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1048.079670][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1048.079678][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1048.079682][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1048.079687][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1048.079694][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1048.079699][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1048.079707][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1048.079711][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1048.079718][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1048.079724][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1048.079728][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1048.079734][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1048.079737][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1048.079740][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1048.079747][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1048.079751][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1048.079756][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1048.079761][    C1] RIP: 0033:0x7f439756d93b
[ 1048.079765][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1048.079768][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1048.079771][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1048.079773][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1048.079775][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1048.079777][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1048.079779][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1048.079777][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 1048.079779][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1048.079785][    C1]  </TASK>
| [ 1048.080543][    C3] Tainted: [L]=SOFTLOCKUP
[ 1048.080544][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1048.080546][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1048.080551][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1048.080554][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1048.080557][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1048.080559][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1048.080561][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1048.080563][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1048.080564][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1048.080566][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1048.080569][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1048.080572][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1048.080575][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1048.080577][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1048.080578][    C3] PKRU: 55555554
[ 1048.080580][    C3] Call Trace:
[ 1048.080581][    C3]  <IRQ>
[ 1048.080582][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1048.080588][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1048.080593][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1048.080596][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1048.080600][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1048.080605][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1048.080608][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1048.080613][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1048.080616][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1048.080620][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1048.080622][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1048.080625][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1048.080627][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1048.080632][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1048.080636][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1048.080638][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1048.080642][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1048.080647][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1048.080651][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1048.080656][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1048.080659][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1048.080665][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1048.080669][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1048.080672][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1048.080674][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1048.080678][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1048.080681][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1048.080683][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1048.080690][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1048.080692][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1048.080695][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1048.080700][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1048.080703][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1048.080706][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1048.080709][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1048.080714][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1048.080717][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1048.080721][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1048.080726][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1048.080729][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1048.080734][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1048.080738][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1048.080741][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1048.080746][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1048.080750][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1048.080755][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1048.080758][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1048.080761][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1048.080765][    C3]  </IRQ>
[ 1048.080766][    C3]  <TASK>
[ 1048.080768][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1048.080772][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1048.080775][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1048.080777][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1048.080780][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1048.080782][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1048.080783][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1048.080785][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1048.080787][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1048.080791][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1048.080796][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1048.080801][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1048.080805][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1048.080809][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1048.080812][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1048.080816][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1048.080818][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1048.080823][ C3] xas_alloc (lib/xarray.c:378) 
[ 1048.080827][ C3] xas_create (lib/xarray.c:685) 
[ 1048.080833][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1048.080837][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1048.080841][ C3] __xa_store (lib/xarray.c:1703) 
[ 1048.080845][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1048.080849][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1048.080852][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1048.080855][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1048.080860][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1048.080864][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1048.080867][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1048.080872][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1048.080874][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1048.080877][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1048.080881][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1048.080884][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1048.080889][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1048.080893][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1048.080897][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1048.080901][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1048.080905][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1048.080911][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1048.080915][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1048.080920][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1048.080925][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1048.080928][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1048.080932][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1048.080935][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1048.080939][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1048.080945][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1048.080949][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1048.080953][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1048.080956][    C3] RIP: 0033:0x7f439756d93b
[ 1048.080961][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1048.080963][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1048.080966][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1048.080968][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1048.080969][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1048.080971][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1048.080973][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1048.656136][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1048.656144][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1048.656148][ C0] softirqs last disabled at (0): 0x0 
| [ 1048.656161][    C0] Tainted: [L]=SOFTLOCKUP
[ 1048.656162][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1048.656164][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1048.656174][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1048.656177][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1048.656180][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1048.656183][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1048.656185][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1048.656186][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1048.656189][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1048.656191][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1048.656193][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1048.656197][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1048.656199][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1048.656201][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1048.656202][    C0] PKRU: 55555554
[ 1048.656203][    C0] Call Trace:
[ 1048.656207][    C0]  <TASK>
[ 1048.656210][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1048.656214][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1048.656219][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1048.656223][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1048.656231][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1048.656234][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1048.656237][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1048.656240][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1048.656247][ C0] xa_store (lib/xarray.c:1734) 
[ 1048.656252][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1048.656258][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1048.656263][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1048.656266][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1048.656269][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1048.656275][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1048.656279][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1048.656287][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1048.656290][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1048.656296][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1048.656303][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1048.656308][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1048.656317][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1048.656321][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1048.656328][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1048.656333][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1048.656336][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1048.656341][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1048.656345][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1048.656348][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1048.656355][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1048.656359][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1048.656365][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1048.656370][    C0] RIP: 0033:0x7f439756d93b
[ 1048.656374][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1048.656377][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1048.656381][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1048.656383][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1048.656385][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1048.656387][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1048.656389][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1052.669140][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1052.669149][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1052.669153][ C2] softirqs last disabled at (0): 0x0 
| [ 1052.669166][    C2] Tainted: [L]=SOFTLOCKUP
[ 1052.669168][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1052.669171][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1052.669180][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1052.669184][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1052.669187][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1052.669190][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1052.669192][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1052.669194][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1052.669196][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1052.669198][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1052.669201][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1052.669204][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1052.669206][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1052.669208][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1052.669209][    C2] PKRU: 55555554
[ 1052.669211][    C2] Call Trace:
[ 1052.669215][    C2]  <TASK>
[ 1052.669218][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1052.669222][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1052.669228][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1052.669232][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1052.669240][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1052.669244][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1052.669246][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1052.669249][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1052.669256][ C2] xa_store (lib/xarray.c:1734) 
[ 1052.669261][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1052.669267][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1052.669273][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1052.669276][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1052.669278][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1052.669286][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1052.669289][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1052.669297][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1052.669301][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1052.669306][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1052.669314][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1052.669319][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1052.669328][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1052.669332][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1052.669338][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1052.669343][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1052.669347][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1052.669352][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1052.669355][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1052.669359][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1052.669367][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1052.669371][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1052.669377][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1052.669382][    C2] RIP: 0033:0x7f439756d93b
[ 1052.669387][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1052.669390][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1052.669393][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1052.669395][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1052.669397][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1052.669399][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1052.669401][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1072.669143][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1072.669153][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1072.669156][ C1] softirqs last disabled at (0): 0x0 
| [ 1072.669170][    C1] Tainted: [L]=SOFTLOCKUP
[ 1072.669172][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1072.669174][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1072.669184][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1072.669188][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1072.669191][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1072.669193][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1072.669196][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1072.669198][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1072.669200][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1072.669201][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1072.669204][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1072.669208][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1072.669210][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1072.669211][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1072.669213][    C1] PKRU: 55555554
[ 1072.669214][    C1] Call Trace:
[ 1072.669219][    C1]  <TASK>
[ 1072.669223][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1072.669226][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1072.669232][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1072.669236][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1072.669244][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1072.669248][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1072.669251][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1072.669254][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1072.669261][ C1] xa_store (lib/xarray.c:1734) 
[ 1072.669266][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1072.669272][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1072.669277][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1072.669280][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1072.669282][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1072.669290][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1072.669293][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1072.669301][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1072.669305][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1072.669310][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1072.669318][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1072.669323][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1072.669333][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1072.669337][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1072.669344][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1072.669349][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1072.669352][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1072.669357][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1072.669361][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1072.669364][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1072.669372][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1072.669376][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1072.669382][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1072.669388][    C1] RIP: 0033:0x7f439756d93b
[ 1072.669393][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1072.669397][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1072.669400][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1072.669402][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1072.669404][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1072.669406][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1072.669408][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1072.670126][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1072.670132][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1072.670135][ C3] softirqs last disabled at (0): 0x0 
| [ 1072.670145][    C3] Tainted: [L]=SOFTLOCKUP
[ 1072.670146][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1072.670148][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1072.670154][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1072.670156][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1072.670159][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1072.670161][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1072.670163][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1072.670165][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1072.670167][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1072.670169][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1072.670172][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1072.670175][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1072.670177][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1072.670178][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1072.670180][    C3] PKRU: 55555554
[ 1072.670181][    C3] Call Trace:
[ 1072.670183][    C3]  <IRQ>
[ 1072.670185][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1072.670190][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1072.670195][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1072.670198][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1072.670203][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1072.670208][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1072.670212][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1072.670215][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1072.670218][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1072.670222][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1072.670225][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1072.670227][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1072.670230][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1072.670235][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1072.670239][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1072.670241][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1072.670245][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1072.670250][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1072.670254][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1072.670259][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1072.670264][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1072.670269][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1072.670274][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1072.670277][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1072.670280][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1072.670283][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1072.670287][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1072.670290][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1072.670296][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1072.670299][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1072.670302][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1072.670306][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1072.670310][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1072.670313][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1072.670316][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1072.670320][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1072.670323][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1072.670327][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1072.670333][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1072.670335][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1072.670341][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1072.670345][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1072.670348][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1072.670353][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1072.670357][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1072.670363][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1072.670367][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1072.670370][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1072.670374][    C3]  </IRQ>
[ 1072.670374][    C3]  <TASK>
[ 1072.670376][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1072.670380][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1072.670383][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1072.670386][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1072.670388][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1072.670390][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1072.670391][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1072.670393][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1072.670395][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1072.670399][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1072.670405][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1072.670410][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1072.670414][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1072.670419][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1072.670422][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1072.670426][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1072.670429][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1072.670434][ C3] xas_alloc (lib/xarray.c:378) 
[ 1072.670439][ C3] xas_create (lib/xarray.c:685) 
[ 1072.670445][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1072.670449][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1072.670452][ C3] __xa_store (lib/xarray.c:1703) 
[ 1072.670456][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1072.670461][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1072.670464][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1072.670466][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1072.670471][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1072.670475][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1072.670478][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1072.670483][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1072.670486][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1072.670488][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1072.670492][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1072.670496][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1072.670501][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1072.670505][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1072.670509][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1072.670513][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1072.670518][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1072.670525][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1072.670529][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1072.670533][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1072.670537][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1072.670541][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1072.670544][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1072.670547][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1072.670551][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1072.670556][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1072.670560][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1072.670565][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1072.670568][    C3] RIP: 0033:0x7f439756d93b
[ 1072.670572][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1072.670575][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1072.670577][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1072.670580][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1072.670582][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1072.670583][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1072.670585][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1076.656137][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1076.656147][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1076.656150][ C0] softirqs last disabled at (0): 0x0 
| [ 1076.656163][    C0] Tainted: [L]=SOFTLOCKUP
[ 1076.656165][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1076.656167][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 1076.656174][ C0] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 1076.656177][    C0] RSP: 0018:ffffc900034c7a00 EFLAGS: 00000282
[ 1076.656181][    C0] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1076.656183][    C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1076.656185][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1076.656187][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1076.656189][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1076.656191][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1076.656194][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1076.656198][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1076.656200][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1076.656202][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1076.656203][    C0] PKRU: 55555554
[ 1076.656205][    C0] Call Trace:
[ 1076.656208][    C0]  <TASK>
[ 1076.656212][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1076.656222][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1076.656226][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1076.656231][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1076.656235][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1076.656242][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1076.656246][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1076.656249][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1076.656252][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1076.656259][ C0] xa_store (lib/xarray.c:1734) 
[ 1076.656264][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1076.656269][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1076.656275][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1076.656277][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1076.656280][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1076.656287][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1076.656291][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1076.656298][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1076.656302][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1076.656307][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1076.656315][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1076.656319][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1076.656327][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1076.656332][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1076.656339][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1076.656344][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1076.656347][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1076.656352][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1076.656355][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1076.656359][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1076.656366][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1076.656370][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1076.656375][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1076.656380][    C0] RIP: 0033:0x7f439756d93b
[ 1076.656384][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1076.656387][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1076.656389][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1076.656392][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1076.656393][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1076.656395][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1076.656397][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1080.669139][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1080.669149][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1080.669153][ C2] softirqs last disabled at (0): 0x0 
| [ 1080.669166][    C2] Tainted: [L]=SOFTLOCKUP
[ 1080.669167][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1080.669170][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1080.669180][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1080.669183][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1080.669186][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1080.669189][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1080.669191][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1080.669193][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1080.669195][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1080.669196][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1080.669199][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1080.669202][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1080.669204][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1080.669206][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1080.669208][    C2] PKRU: 55555554
[ 1080.669209][    C2] Call Trace:
[ 1080.669213][    C2]  <TASK>
[ 1080.669217][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1080.669221][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1080.669226][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1080.669231][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1080.669239][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1080.669243][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1080.669246][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1080.669249][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1080.669256][ C2] xa_store (lib/xarray.c:1734) 
[ 1080.669260][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1080.669266][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1080.669272][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1080.669274][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1080.669277][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1080.669284][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1080.669288][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1080.669295][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1080.669299][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1080.669304][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1080.669312][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1080.669317][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1080.669326][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1080.669330][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1080.669337][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1080.669342][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1080.669345][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1080.669350][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1080.669354][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1080.669357][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1080.669365][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1080.669369][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1080.669375][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1080.669380][    C2] RIP: 0033:0x7f439756d93b
[ 1080.669385][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1080.669387][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1080.669391][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1080.669393][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1080.669395][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1080.669397][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1080.669399][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1100.669141][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1100.669151][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1100.669154][ C1] softirqs last disabled at (0): 0x0 
| [ 1100.669167][    C1] Tainted: [L]=SOFTLOCKUP
[ 1100.669169][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1100.669172][ C1] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1100.669183][ C1] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 1100.669186][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1100.669189][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1100.669192][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1100.669193][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1100.669196][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1100.669198][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1100.669200][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1100.669202][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1100.669206][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1100.669208][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1100.669209][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1100.669211][    C1] PKRU: 55555554
[ 1100.669212][    C1] Call Trace:
[ 1100.669217][    C1]  <TASK>
[ 1100.669221][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1100.669225][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1100.669231][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1100.669236][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1100.669243][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1100.669247][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1100.669250][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1100.669253][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1100.669260][ C1] xa_store (lib/xarray.c:1734) 
[ 1100.669264][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1100.669271][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1100.669277][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1100.669280][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1100.669283][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1100.669289][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1100.669293][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1100.669301][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1100.669304][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1100.669310][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1100.669317][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1100.669322][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1100.669332][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1100.669336][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1100.669343][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1100.669348][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1100.669351][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1100.669357][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1100.669360][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1100.669363][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1100.669371][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1100.669375][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1100.669381][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1100.669386][    C1] RIP: 0033:0x7f439756d93b
[ 1100.669392][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1100.669395][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1100.669398][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1100.669400][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1100.669402][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1100.669404][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1100.669405][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1100.670126][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1100.670132][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1100.670136][ C3] softirqs last disabled at (0): 0x0 
| [ 1100.670146][    C3] Tainted: [L]=SOFTLOCKUP
[ 1100.670147][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1100.670150][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1100.670156][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1100.670159][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1100.670162][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1100.670164][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1100.670166][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1100.670168][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1100.670170][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1100.670172][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1100.670174][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1100.670178][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1100.670180][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1100.670181][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1100.670183][    C3] PKRU: 55555554
[ 1100.670184][    C3] Call Trace:
[ 1100.670187][    C3]  <IRQ>
[ 1100.670188][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1100.670194][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1100.670198][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1100.670201][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1100.670207][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1100.670213][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1100.670216][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1100.670220][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1100.670223][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1100.670226][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1100.670229][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1100.670231][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1100.670235][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1100.670240][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1100.670243][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1100.670246][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1100.670250][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1100.670256][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1100.670260][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1100.670265][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1100.670269][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1100.670275][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1100.670279][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1100.670283][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1100.670286][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1100.670289][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1100.670292][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1100.670295][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1100.670301][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1100.670304][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1100.670307][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1100.670312][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1100.670316][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1100.670319][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1100.670322][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1100.670325][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1100.670329][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1100.670333][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1100.670337][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1100.670340][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1100.670346][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1100.670349][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1100.670353][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1100.670358][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1100.670362][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1100.670368][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1100.670372][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1100.670375][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1100.670379][    C3]  </IRQ>
[ 1100.670380][    C3]  <TASK>
[ 1100.670382][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1100.670386][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1100.670390][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1100.670393][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1100.670395][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1100.670397][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1100.670399][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1100.670401][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1100.670403][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1100.670407][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1100.670413][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1100.670418][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1100.670423][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1100.670427][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1100.670430][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1100.670434][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1100.670437][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1100.670442][ C3] xas_alloc (lib/xarray.c:378) 
[ 1100.670447][ C3] xas_create (lib/xarray.c:685) 
[ 1100.670453][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1100.670458][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1100.670461][ C3] __xa_store (lib/xarray.c:1703) 
[ 1100.670465][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1100.670470][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1100.670472][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1100.670475][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1100.670480][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1100.670484][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1100.670487][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1100.670492][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1100.670495][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1100.670498][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1100.670502][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1100.670505][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1100.670510][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1100.670514][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1100.670518][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1100.670522][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1100.670526][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1100.670533][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1100.670536][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1100.670541][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1100.670545][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1100.670548][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1100.670552][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1100.670554][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1100.670558][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1100.670563][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1100.670567][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1100.670571][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1100.670574][    C3] RIP: 0033:0x7f439756d93b
[ 1100.670578][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1100.670580][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1100.670583][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1100.670585][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1100.670587][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1100.670589][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1100.670591][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1104.656135][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1104.656143][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1104.656147][ C0] softirqs last disabled at (0): 0x0 
| [ 1104.656160][    C0] Tainted: [L]=SOFTLOCKUP
[ 1104.656162][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1104.656164][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1104.656173][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1104.656176][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1104.656180][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1104.656182][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1104.656184][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1104.656186][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1104.656188][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1104.656190][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1104.656192][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1104.656196][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1104.656198][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1104.656200][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1104.656202][    C0] PKRU: 55555554
[ 1104.656203][    C0] Call Trace:
[ 1104.656206][    C0]  <TASK>
[ 1104.656209][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1104.656213][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1104.656218][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1104.656223][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1104.656230][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1104.656233][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1104.656236][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1104.656239][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1104.656246][ C0] xa_store (lib/xarray.c:1734) 
[ 1104.656250][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1104.656256][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1104.656261][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1104.656264][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1104.656267][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1104.656275][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1104.656278][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1104.656286][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1104.656289][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1104.656294][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1104.656301][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1104.656306][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1104.656314][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1104.656319][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1104.656326][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1104.656330][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1104.656334][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1104.656338][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1104.656342][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1104.656345][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1104.656352][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1104.656357][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1104.656362][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1104.656366][    C0] RIP: 0033:0x7f439756d93b
[ 1104.656371][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1104.656374][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1104.656377][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1104.656379][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1104.656381][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1104.656383][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1104.656385][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1108.669186][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1108.669211][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1108.669214][ C2] softirqs last disabled at (0): 0x0 
| [ 1108.669238][    C2] Tainted: [L]=SOFTLOCKUP
[ 1108.669241][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1108.669244][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1108.669260][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1108.669265][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1108.669272][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1108.669274][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1108.669276][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1108.669278][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1108.669280][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1108.669282][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1108.669285][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1108.669289][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1108.669291][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1108.669292][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1108.669294][    C2] PKRU: 55555554
[ 1108.669295][    C2] Call Trace:
[ 1108.669306][    C2]  <TASK>
[ 1108.669312][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1108.669316][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1108.669327][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1108.669333][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1108.669348][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1108.669354][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1108.669357][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1108.669360][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1108.669367][ C2] xa_store (lib/xarray.c:1734) 
[ 1108.669375][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1108.669399][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1108.669405][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1108.669408][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1108.669411][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1108.669418][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1108.669422][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1108.669433][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1108.669437][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1108.669442][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1108.669463][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1108.669468][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1108.669482][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1108.669486][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1108.669499][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1108.669506][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1108.669509][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1108.669515][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1108.669518][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1108.669521][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1108.669529][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1108.669533][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1108.669540][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1108.669549][    C2] RIP: 0033:0x7f439756d93b
[ 1108.669554][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1108.669557][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1108.669560][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1108.669563][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1108.669565][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1108.669566][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1108.669568][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1126.093216][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 1126.093508][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 1126.093763][    C1] NMI backtrace for cpu 1
| [ 1126.093781][    C1] Tainted: [L]=SOFTLOCKUP
[ 1126.093783][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1126.093785][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1126.093794][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1126.093797][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1126.093801][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1126.093803][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1126.093805][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1126.093808][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1126.093809][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1126.093811][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1126.093816][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1126.093819][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1126.093821][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1126.093823][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1126.093825][    C1] PKRU: 55555554
[ 1126.093826][    C1] Call Trace:
[ 1126.093831][    C1]  <TASK>
[ 1126.093835][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1126.093839][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1126.093844][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1126.093847][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1126.093856][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1126.093859][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1126.093862][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1126.093865][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1126.093872][ C1] xa_store (lib/xarray.c:1734) 
[ 1126.093877][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1126.093883][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1126.093888][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1126.093891][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1126.093894][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1126.093899][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1126.093903][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1126.093911][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1126.093915][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1126.093919][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1126.093926][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1126.093931][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1126.093940][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1126.093943][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1126.093950][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1126.093957][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1126.093960][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1126.093965][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1126.093969][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1126.093972][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1126.093979][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1126.093983][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1126.093989][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1126.093993][    C1] RIP: 0033:0x7f439756d93b
[ 1126.093999][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1126.094001][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1126.094005][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1126.094007][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1126.094009][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1126.094011][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1126.094013][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1126.094011][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 1126.094013][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1126.094019][    C1]  </TASK>
| [ 1126.094760][    C3] Tainted: [L]=SOFTLOCKUP
[ 1126.094762][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1126.094764][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1126.094769][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1126.094774][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1126.094777][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1126.094779][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1126.094781][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1126.094783][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1126.094785][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1126.094787][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1126.094790][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1126.094793][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1126.094795][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1126.094797][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1126.094798][    C3] PKRU: 55555554
[ 1126.094800][    C3] Call Trace:
[ 1126.094801][    C3]  <IRQ>
[ 1126.094802][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1126.094814][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1126.094821][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1126.094826][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1126.094830][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1126.094835][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1126.094838][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1126.094842][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1126.094845][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1126.094850][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1126.094853][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1126.094855][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1126.094858][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1126.094863][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1126.094867][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1126.094869][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1126.094873][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1126.094878][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1126.094881][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1126.094886][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1126.094890][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1126.094895][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1126.094900][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1126.094903][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1126.094905][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1126.094909][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1126.094912][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1126.094915][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1126.094922][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1126.094924][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1126.094928][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1126.094932][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1126.094936][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1126.094940][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1126.094942][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1126.094950][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1126.094953][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1126.094958][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1126.094962][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1126.094965][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1126.094970][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1126.094974][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1126.094977][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1126.094981][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1126.094985][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1126.094991][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1126.094995][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1126.094998][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1126.095001][    C3]  </IRQ>
[ 1126.095002][    C3]  <TASK>
[ 1126.095003][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1126.095008][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1126.095011][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1126.095013][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1126.095015][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1126.095017][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1126.095019][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1126.095020][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1126.095022][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1126.095026][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1126.095032][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1126.095037][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1126.095040][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1126.095045][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1126.095048][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1126.095052][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1126.095054][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1126.095059][ C3] xas_alloc (lib/xarray.c:378) 
[ 1126.095064][ C3] xas_create (lib/xarray.c:685) 
[ 1126.095070][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1126.095074][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1126.095079][ C3] __xa_store (lib/xarray.c:1703) 
[ 1126.095082][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1126.095087][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1126.095090][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1126.095093][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1126.095098][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1126.095101][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1126.095111][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1126.095116][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1126.095119][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1126.095123][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1126.095127][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1126.095130][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1126.095135][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1126.095139][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1126.095144][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1126.095147][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1126.095153][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1126.095160][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1126.095163][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1126.095168][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1126.095173][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1126.095176][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1126.095180][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1126.095182][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1126.095186][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1126.095192][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1126.095195][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1126.095200][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1126.095202][    C3] RIP: 0033:0x7f439756d93b
[ 1126.095209][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1126.095212][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1126.095215][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1126.095216][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1126.095218][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1126.095220][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1126.095221][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1132.656139][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1132.656149][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1132.656152][ C0] softirqs last disabled at (0): 0x0 
| [ 1132.656166][    C0] Tainted: [L]=SOFTLOCKUP
[ 1132.656168][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1132.656170][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1132.656179][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1132.656182][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1132.656186][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1132.656188][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1132.656190][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1132.656192][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1132.656194][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1132.656196][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1132.656198][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1132.656203][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1132.656205][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1132.656206][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1132.656208][    C0] PKRU: 55555554
[ 1132.656209][    C0] Call Trace:
[ 1132.656213][    C0]  <TASK>
[ 1132.656217][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1132.656221][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1132.656226][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1132.656231][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1132.656239][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1132.656243][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1132.656246][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1132.656249][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1132.656256][ C0] xa_store (lib/xarray.c:1734) 
[ 1132.656261][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1132.656268][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1132.656273][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1132.656276][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1132.656279][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1132.656285][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1132.656289][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1132.656297][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1132.656308][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1132.656313][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1132.656321][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1132.656326][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1132.656335][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1132.656339][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1132.656346][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1132.656352][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1132.656355][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1132.656360][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1132.656363][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1132.656366][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1132.656373][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1132.656377][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1132.656383][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1132.656388][    C0] RIP: 0033:0x7f439756d93b
[ 1132.656396][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1132.656399][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1132.656402][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1132.656404][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1132.656406][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1132.656408][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1132.656410][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1136.669142][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1136.669151][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1136.669155][ C2] softirqs last disabled at (0): 0x0 
| [ 1136.669170][    C2] Tainted: [L]=SOFTLOCKUP
[ 1136.669172][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1136.669174][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1136.669184][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1136.669188][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1136.669191][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1136.669193][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1136.669195][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1136.669197][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1136.669200][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1136.669202][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1136.669204][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1136.669208][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1136.669210][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1136.669211][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1136.669213][    C2] PKRU: 55555554
[ 1136.669214][    C2] Call Trace:
[ 1136.669219][    C2]  <TASK>
[ 1136.669223][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1136.669227][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1136.669233][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1136.669237][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1136.669245][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1136.669248][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1136.669251][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1136.669254][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1136.669262][ C2] xa_store (lib/xarray.c:1734) 
[ 1136.669266][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1136.669273][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1136.669278][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1136.669281][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1136.669284][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1136.669298][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1136.669302][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1136.669309][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1136.669313][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1136.669319][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1136.669326][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1136.669332][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1136.669341][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1136.669345][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1136.669352][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1136.669357][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1136.669361][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1136.669366][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1136.669369][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1136.669372][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1136.669381][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1136.669385][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1136.669391][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1136.669396][    C2] RIP: 0033:0x7f439756d93b
[ 1136.669402][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1136.669405][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1136.669408][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1136.669410][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1136.669412][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1136.669414][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1136.669416][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1152.669143][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1152.669153][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1152.669157][ C1] softirqs last disabled at (0): 0x0 
| [ 1152.669171][    C1] Tainted: [L]=SOFTLOCKUP
[ 1152.669172][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1152.669175][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1152.669187][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1152.669190][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1152.669193][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1152.669195][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1152.669198][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1152.669200][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1152.669202][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1152.669204][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1152.669207][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1152.669210][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1152.669212][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1152.669214][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1152.669216][    C1] PKRU: 55555554
[ 1152.669217][    C1] Call Trace:
[ 1152.669222][    C1]  <TASK>
[ 1152.669226][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1152.669230][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1152.669236][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1152.669240][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1152.669248][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1152.669252][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1152.669255][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1152.669258][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1152.669265][ C1] xa_store (lib/xarray.c:1734) 
[ 1152.669270][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1152.669276][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1152.669281][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1152.669289][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1152.669292][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1152.669300][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1152.669303][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1152.669311][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1152.669315][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1152.669320][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1152.669328][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1152.669333][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1152.669342][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1152.669347][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1152.669354][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1152.669359][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1152.669363][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1152.669368][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1152.669372][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1152.669375][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1152.669382][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1152.669386][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1152.669392][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1152.669398][    C1] RIP: 0033:0x7f439756d93b
[ 1152.669403][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1152.669406][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1152.669409][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1152.669411][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1152.669413][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1152.669415][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1152.669417][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1152.670127][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1152.670132][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1152.670136][ C3] softirqs last disabled at (0): 0x0 
| [ 1152.670146][    C3] Tainted: [L]=SOFTLOCKUP
[ 1152.670148][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1152.670149][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 1152.670154][ C3] Code: 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff 5b b8 01 00 00 00 5d 41 5c <c3> cc cc cc cc 41 bc 08 00 00 00 45 29 dc 49 8d 14 2c eb 0c 48 83
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	48 85 d2             	test   %rdx,%rdx
   5:	0f 84 4c ff ff ff    	je     0xffffffffffffff57
   b:	41 83 e2 07          	and    $0x7,%r10d
   f:	49 39 d1             	cmp    %rdx,%r9
  12:	0f 85 34 ff ff ff    	jne    0xffffffffffffff4c
  18:	45 3a 11             	cmp    (%r9),%r10b
  1b:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff4c
  21:	5b                   	pop    %rbx
  22:	b8 01 00 00 00       	mov    $0x1,%eax
  27:	5d                   	pop    %rbp
  28:	41 5c                	pop    %r12
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  35:	45 29 dc             	sub    %r11d,%r12d
  38:	49 8d 14 2c          	lea    (%r12,%rbp,1),%rdx
  3c:	eb 0c                	jmp    0x4a
  3e:	48                   	rex.W
  3f:	83                   	.byte 0x83

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	41 bc 08 00 00 00    	mov    $0x8,%r12d
   b:	45 29 dc             	sub    %r11d,%r12d
   e:	49 8d 14 2c          	lea    (%r12,%rbp,1),%rdx
  12:	eb 0c                	jmp    0x20
  14:	48                   	rex.W
  15:	83                   	.byte 0x83
[ 1152.670157][    C3] RSP: 0018:ffffc90000270a40 EFLAGS: 00000246
[ 1152.670160][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1152.670162][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1152.670164][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1152.670166][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1152.670168][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1152.670170][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1152.670173][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1152.670176][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1152.670178][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1152.670179][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1152.670181][    C3] PKRU: 55555554
[ 1152.670182][    C3] Call Trace:
[ 1152.670185][    C3]  <IRQ>
[ 1152.670186][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1152.670192][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1152.670197][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1152.670202][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1152.670205][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1152.670209][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1152.670214][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1152.670217][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1152.670221][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1152.670228][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1152.670232][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1152.670234][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1152.670237][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1152.670240][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1152.670245][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1152.670249][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1152.670252][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1152.670255][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1152.670261][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1152.670264][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1152.670270][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1152.670274][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1152.670279][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1152.670285][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1152.670287][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1152.670291][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1152.670295][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1152.670298][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1152.670301][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1152.670306][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1152.670309][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1152.670312][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1152.670317][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1152.670321][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1152.670325][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1152.670328][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1152.670332][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1152.670335][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1152.670340][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1152.670344][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1152.670347][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1152.670352][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1152.670356][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1152.670359][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1152.670364][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1152.670368][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1152.670374][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1152.670378][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1152.670381][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1152.670384][    C3]  </IRQ>
[ 1152.670385][    C3]  <TASK>
[ 1152.670386][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1152.670390][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1152.670394][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1152.670397][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1152.670400][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1152.670402][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1152.670404][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1152.670406][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1152.670408][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1152.670412][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1152.670417][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1152.670423][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1152.670427][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1152.670431][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1152.670434][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1152.670438][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1152.670441][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1152.670446][ C3] xas_alloc (lib/xarray.c:378) 
[ 1152.670450][ C3] xas_create (lib/xarray.c:685) 
[ 1152.670456][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1152.670461][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1152.670465][ C3] __xa_store (lib/xarray.c:1703) 
[ 1152.670469][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1152.670473][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1152.670476][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1152.670479][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1152.670484][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1152.670488][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1152.670491][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1152.670495][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1152.670498][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1152.670501][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1152.670505][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1152.670508][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1152.670513][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1152.670517][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1152.670522][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1152.670525][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1152.670530][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1152.670537][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1152.670540][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1152.670545][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1152.670549][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1152.670552][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1152.670556][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1152.670559][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1152.670562][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1152.670568][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1152.670571][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1152.670576][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1152.670579][    C3] RIP: 0033:0x7f439756d93b
[ 1152.670583][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1152.670585][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1152.670588][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1152.670590][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1152.670592][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1152.670593][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1152.670595][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1160.656138][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1160.656154][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1160.656158][ C0] softirqs last disabled at (0): 0x0 
| [ 1160.656171][    C0] Tainted: [L]=SOFTLOCKUP
[ 1160.656173][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1160.656174][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1160.656183][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1160.656186][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1160.656189][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1160.656191][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1160.656193][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1160.656195][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1160.656197][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1160.656199][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1160.656201][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1160.656206][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1160.656207][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1160.656209][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1160.656211][    C0] PKRU: 55555554
[ 1160.656212][    C0] Call Trace:
[ 1160.656216][    C0]  <TASK>
[ 1160.656220][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1160.656224][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1160.656229][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1160.656234][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1160.656242][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1160.656246][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1160.656249][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1160.656251][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1160.656258][ C0] xa_store (lib/xarray.c:1734) 
[ 1160.656263][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1160.656269][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1160.656274][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1160.656277][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1160.656280][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1160.656287][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1160.656290][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1160.656298][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1160.656302][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1160.656308][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1160.656315][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1160.656320][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1160.656329][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1160.656333][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1160.656340][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1160.656345][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1160.656349][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1160.656355][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1160.656359][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1160.656362][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1160.656370][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1160.656374][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1160.656379][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1160.656384][    C0] RIP: 0033:0x7f439756d93b
[ 1160.656389][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1160.656392][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1160.656395][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1160.656397][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1160.656398][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1160.656400][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1160.656402][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1164.669141][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1164.669152][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1164.669156][ C2] softirqs last disabled at (0): 0x0 
| [ 1164.669170][    C2] Tainted: [L]=SOFTLOCKUP
[ 1164.669172][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1164.669174][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1164.669184][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 1164.669188][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1164.669191][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1164.669194][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1164.669196][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1164.669198][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1164.669200][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1164.669202][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1164.669205][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1164.669209][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1164.669211][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1164.669212][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1164.669214][    C2] PKRU: 55555554
[ 1164.669215][    C2] Call Trace:
[ 1164.669219][    C2]  <TASK>
[ 1164.669223][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1164.669228][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1164.669233][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1164.669238][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1164.669246][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1164.669250][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1164.669261][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1164.669265][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1164.669272][ C2] xa_store (lib/xarray.c:1734) 
[ 1164.669278][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1164.669286][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1164.669291][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1164.669294][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1164.669297][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1164.669304][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1164.669308][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1164.669316][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1164.669320][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1164.669325][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1164.669333][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1164.669340][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1164.669349][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1164.669353][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1164.669361][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1164.669366][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1164.669371][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1164.669377][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1164.669380][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1164.669384][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1164.669391][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1164.669395][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1164.669400][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1164.669407][    C2] RIP: 0033:0x7f439756d93b
[ 1164.669413][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1164.669415][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1164.669419][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1164.669421][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1164.669423][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1164.669424][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1164.669426][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1180.669179][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1180.669200][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1180.669204][ C1] softirqs last disabled at (0): 0x0 
| [ 1180.669227][    C1] Tainted: [L]=SOFTLOCKUP
[ 1180.669229][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1180.669234][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1180.669264][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1180.669268][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1180.669274][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1180.669276][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1180.669279][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1180.669282][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1180.669284][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1180.669286][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1180.669289][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1180.669293][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1180.669295][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1180.669297][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1180.669298][    C1] PKRU: 55555554
[ 1180.669299][    C1] Call Trace:
[ 1180.669311][    C1]  <TASK>
[ 1180.669316][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1180.669321][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1180.669329][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1180.669337][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1180.669350][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1180.669354][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1180.669357][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1180.669360][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1180.669372][ C1] xa_store (lib/xarray.c:1734) 
[ 1180.669378][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1180.669389][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1180.669394][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1180.669397][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1180.669400][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1180.669413][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1180.669417][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1180.669429][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1180.669434][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1180.669445][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1180.669458][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1180.669464][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1180.669480][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1180.669485][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1180.669497][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1180.669503][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1180.669507][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1180.669515][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1180.669520][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1180.669525][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1180.669535][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1180.669538][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1180.669550][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1180.669562][    C1] RIP: 0033:0x7f439756d93b
[ 1180.669571][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1180.669575][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1180.669579][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1180.669581][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1180.669583][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1180.669586][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1180.669588][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1180.670130][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1180.670136][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1180.670141][ C3] softirqs last disabled at (0): 0x0 
| [ 1180.670156][    C3] Tainted: [L]=SOFTLOCKUP
[ 1180.670158][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1180.670161][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1180.670168][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1180.670173][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1180.670176][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1180.670178][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1180.670180][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1180.670184][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1180.670187][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1180.670191][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1180.670193][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1180.670198][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1180.670200][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1180.670201][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1180.670203][    C3] PKRU: 55555554
[ 1180.670204][    C3] Call Trace:
[ 1180.670206][    C3]  <IRQ>
[ 1180.670209][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1180.670218][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1180.670225][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1180.670229][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1180.670235][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1180.670244][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1180.670248][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1180.670252][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1180.670256][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1180.670261][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1180.670264][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1180.670271][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1180.670275][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1180.670280][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1180.670284][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1180.670290][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1180.670294][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1180.670299][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1180.670305][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1180.670311][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1180.670317][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1180.670325][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1180.670332][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1180.670335][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1180.670339][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1180.670343][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1180.670347][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1180.670350][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1180.670362][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1180.670365][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1180.670369][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1180.670373][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1180.670380][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1180.670384][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1180.670387][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1180.670391][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1180.670395][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1180.670399][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1180.670405][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1180.670408][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1180.670414][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1180.670419][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1180.670423][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1180.670428][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1180.670434][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1180.670441][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1180.670446][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1180.670450][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1180.670454][    C3]  </IRQ>
[ 1180.670455][    C3]  <TASK>
[ 1180.670456][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1180.670462][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1180.670465][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1180.670469][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1180.670473][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1180.670475][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1180.670478][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1180.670480][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1180.670487][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1180.670493][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1180.670499][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1180.670505][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1180.670513][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1180.670518][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1180.670521][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1180.670525][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1180.670528][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1180.670533][ C3] xas_alloc (lib/xarray.c:378) 
[ 1180.670538][ C3] xas_create (lib/xarray.c:685) 
[ 1180.670544][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1180.670551][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1180.670554][ C3] __xa_store (lib/xarray.c:1703) 
[ 1180.670559][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1180.670563][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1180.670566][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1180.670570][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1180.670575][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1180.670579][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1180.670583][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1180.670589][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1180.670592][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1180.670596][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1180.670601][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1180.670605][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1180.670610][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1180.670614][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1180.670619][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1180.670622][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1180.670628][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1180.670635][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1180.670638][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1180.670643][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1180.670647][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1180.670651][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1180.670654][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1180.670657][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1180.670661][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1180.670667][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1180.670671][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1180.670675][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1180.670679][    C3] RIP: 0033:0x7f439756d93b
[ 1180.670687][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1180.670691][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1180.670694][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1180.670699][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1180.670701][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1180.670704][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1180.670706][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1188.656176][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1188.656189][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1188.656196][ C0] softirqs last disabled at (0): 0x0 
| [ 1188.656217][    C0] Tainted: [L]=SOFTLOCKUP
[ 1188.656219][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1188.656223][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1188.656239][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1188.656245][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1188.656250][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1188.656254][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1188.656257][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1188.656260][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1188.656264][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1188.656267][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1188.656271][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1188.656278][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1188.656281][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1188.656285][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1188.656288][    C0] PKRU: 55555554
[ 1188.656290][    C0] Call Trace:
[ 1188.656298][    C0]  <TASK>
[ 1188.656306][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1188.656313][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1188.656323][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1188.656330][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1188.656345][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1188.656352][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1188.656357][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1188.656362][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1188.656375][ C0] xa_store (lib/xarray.c:1734) 
[ 1188.656382][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1188.656393][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1188.656403][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1188.656408][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1188.656412][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1188.656424][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1188.656429][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1188.656442][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1188.656449][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1188.656457][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1188.656472][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1188.656481][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1188.656496][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1188.656503][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1188.656515][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1188.656522][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1188.656527][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1188.656535][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1188.656540][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1188.656545][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1188.656556][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1188.656578][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1188.656588][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1188.656596][    C0] RIP: 0033:0x7f439756d93b
[ 1188.656604][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1188.656608][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1188.656613][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1188.656617][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1188.656620][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1188.656623][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1188.656626][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1192.669165][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1192.669180][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1192.669185][ C2] softirqs last disabled at (0): 0x0 
| [ 1192.669205][    C2] Tainted: [L]=SOFTLOCKUP
[ 1192.669207][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1192.669211][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:86 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 1192.669221][ C2] Code: d0 74 11 80 38 00 74 ef 4d 8d 1c 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea <eb> 09 48 83 c0 01 48 39 d0 74 a5 80 38 00 74 f2 e9 74 ff ff ff b8
All code
========
   0:	d0 74 11 80          	shlb   $1,-0x80(%rcx,%rdx,1)
   4:	38 00                	cmp    %al,(%rax)
   6:	74 ef                	je     0xfffffffffffffff7
   8:	4d 8d 1c 2c          	lea    (%r12,%rbp,1),%r11
   c:	48 89 c2             	mov    %rax,%rdx
   f:	48 85 c0             	test   %rax,%rax
  12:	75 b0                	jne    0xffffffffffffffc4
  14:	48 89 da             	mov    %rbx,%rdx
  17:	4c 89 d8             	mov    %r11,%rax
  1a:	4c 29 da             	sub    %r11,%rdx
  1d:	e9 49 ff ff ff       	jmp    0xffffffffffffff6b
  22:	48 85 d2             	test   %rdx,%rdx
  25:	74 b3                	je     0xffffffffffffffda
  27:	48 01 ea             	add    %rbp,%rdx
  2a:*	eb 09                	jmp    0x35		<-- trapping instruction
  2c:	48 83 c0 01          	add    $0x1,%rax
  30:	48 39 d0             	cmp    %rdx,%rax
  33:	74 a5                	je     0xffffffffffffffda
  35:	80 38 00             	cmpb   $0x0,(%rax)
  38:	74 f2                	je     0x2c
  3a:	e9 74 ff ff ff       	jmp    0xffffffffffffffb3
  3f:	b8                   	.byte 0xb8

Code starting with the faulting instruction
===========================================
   0:	eb 09                	jmp    0xb
   2:	48 83 c0 01          	add    $0x1,%rax
   6:	48 39 d0             	cmp    %rdx,%rax
   9:	74 a5                	je     0xffffffffffffffb0
   b:	80 38 00             	cmpb   $0x0,(%rax)
   e:	74 f2                	je     0x2
  10:	e9 74 ff ff ff       	jmp    0xffffffffffffff89
  15:	b8                   	.byte 0xb8
[ 1192.669225][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000286
[ 1192.669229][    C2] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 1192.669232][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1192.669234][    C2] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1192.669236][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1192.669239][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1192.669242][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1192.669245][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1192.669249][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1192.669251][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1192.669253][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1192.669255][    C2] PKRU: 55555554
[ 1192.669256][    C2] Call Trace:
[ 1192.669266][    C2]  <TASK>
[ 1192.669272][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1192.669290][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1192.669293][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1192.669300][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1192.669307][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1192.669317][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1192.669322][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1192.669326][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1192.669329][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1192.669338][ C2] xa_store (lib/xarray.c:1734) 
[ 1192.669344][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1192.669353][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1192.669359][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1192.669362][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1192.669366][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1192.669376][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1192.669392][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1192.669403][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1192.669406][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1192.669412][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1192.669425][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1192.669430][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1192.669445][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1192.669450][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1192.669459][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1192.669465][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1192.669469][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1192.669480][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1192.669483][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1192.669487][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1192.669496][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1192.669503][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1192.669512][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1192.669519][    C2] RIP: 0033:0x7f439756d93b
[ 1192.669527][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1192.669531][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1192.669535][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1192.669537][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1192.669540][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1192.669542][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1192.669544][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1204.108030][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 1204.108329][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 1204.108613][    C1] NMI backtrace for cpu 1
| [ 1204.108637][    C1] Tainted: [L]=SOFTLOCKUP
[ 1204.108639][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1204.108643][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1204.108655][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1204.108660][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1204.108664][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1204.108667][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1204.108669][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1204.108672][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1204.108680][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1204.108683][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1204.108686][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1204.108690][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1204.108693][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1204.108694][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1204.108697][    C1] PKRU: 55555554
[ 1204.108698][    C1] Call Trace:
[ 1204.108702][    C1]  <TASK>
[ 1204.108707][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1204.108712][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1204.108717][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1204.108721][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1204.108732][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1204.108736][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1204.108740][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1204.108743][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1204.108753][ C1] xa_store (lib/xarray.c:1734) 
[ 1204.108757][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1204.108767][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1204.108773][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1204.108776][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1204.108779][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1204.108785][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1204.108788][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1204.108798][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1204.108802][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1204.108808][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1204.108818][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1204.108823][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1204.108832][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1204.108836][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1204.108846][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1204.108856][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1204.108859][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1204.108866][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1204.108871][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1204.108875][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1204.108886][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1204.108890][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1204.108897][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1204.108904][    C1] RIP: 0033:0x7f439756d93b
[ 1204.108912][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1204.108916][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1204.108919][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1204.108922][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1204.108924][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1204.108926][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1204.108928][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1204.108926][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 1204.108928][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1204.108935][    C1]  </TASK>
| [ 1204.109614][    C3] Tainted: [L]=SOFTLOCKUP
[ 1204.109616][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1204.109618][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1204.109625][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1204.109629][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1204.109632][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1204.109635][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1204.109638][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1204.109641][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1204.109644][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1204.109646][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1204.109649][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1204.109654][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1204.109656][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1204.109658][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1204.109665][    C3] PKRU: 55555554
[ 1204.109666][    C3] Call Trace:
[ 1204.109668][    C3]  <IRQ>
[ 1204.109669][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1204.109680][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1204.109687][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1204.109691][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1204.109697][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1204.109707][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1204.109711][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1204.109716][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1204.109720][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1204.109725][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1204.109728][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1204.109731][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1204.109734][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1204.109739][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1204.109743][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1204.109746][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1204.109749][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1204.109756][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1204.109760][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1204.109766][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1204.109771][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1204.109777][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1204.109782][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1204.109786][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1204.109788][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1204.109792][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1204.109796][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1204.109798][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1204.109810][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1204.109813][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1204.109816][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1204.109821][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1204.109825][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1204.109829][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1204.109831][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1204.109839][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1204.109845][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1204.109850][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1204.109854][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1204.109857][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1204.109862][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1204.109866][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1204.109870][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1204.109875][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1204.109880][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1204.109885][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1204.109890][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1204.109894][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1204.109898][    C3]  </IRQ>
[ 1204.109900][    C3]  <TASK>
[ 1204.109901][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1204.109906][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1204.109913][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1204.109916][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1204.109919][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1204.109921][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1204.109923][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1204.109925][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1204.109927][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1204.109931][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1204.109937][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1204.109942][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1204.109946][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1204.109951][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1204.109953][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1204.109958][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1204.109961][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1204.109966][ C3] xas_alloc (lib/xarray.c:378) 
[ 1204.109971][ C3] xas_create (lib/xarray.c:685) 
[ 1204.109978][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1204.109983][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1204.109987][ C3] __xa_store (lib/xarray.c:1703) 
[ 1204.109992][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1204.109996][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1204.109999][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1204.110002][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1204.110007][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1204.110011][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1204.110014][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1204.110019][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1204.110021][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1204.110024][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1204.110028][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1204.110031][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1204.110038][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1204.110041][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1204.110046][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1204.110051][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1204.110055][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1204.110062][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1204.110065][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1204.110071][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1204.110077][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1204.110080][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1204.110084][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1204.110087][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1204.110090][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1204.110096][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1204.110100][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1204.110105][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1204.110108][    C3] RIP: 0033:0x7f439756d93b
[ 1204.110114][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1204.110117][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1204.110120][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1204.110122][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1204.110124][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1204.110126][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1204.110128][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1216.656150][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1216.656160][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1216.656164][ C0] softirqs last disabled at (0): 0x0 
| [ 1216.656179][    C0] Tainted: [L]=SOFTLOCKUP
[ 1216.656181][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1216.656184][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1216.656195][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1216.656199][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1216.656203][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1216.656205][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1216.656207][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1216.656209][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1216.656211][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1216.656213][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1216.656216][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1216.656219][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1216.656221][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1216.656223][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1216.656225][    C0] PKRU: 55555554
[ 1216.656226][    C0] Call Trace:
[ 1216.656231][    C0]  <TASK>
[ 1216.656236][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1216.656240][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1216.656246][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1216.656251][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1216.656259][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1216.656264][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1216.656267][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1216.656269][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1216.656277][ C0] xa_store (lib/xarray.c:1734) 
[ 1216.656282][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1216.656288][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1216.656294][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1216.656296][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1216.656307][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1216.656314][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1216.656318][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1216.656326][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1216.656330][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1216.656335][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1216.656343][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1216.656348][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1216.656361][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1216.656365][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1216.656373][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1216.656378][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1216.656381][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1216.656387][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1216.656391][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1216.656395][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1216.656402][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1216.656406][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1216.656413][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1216.656418][    C0] RIP: 0033:0x7f439756d93b
[ 1216.656424][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1216.656427][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1216.656431][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1216.656433][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1216.656435][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1216.656436][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1216.656438][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1220.669139][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1220.669149][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1220.669152][ C2] softirqs last disabled at (0): 0x0 
| [ 1220.669167][    C2] Tainted: [L]=SOFTLOCKUP
[ 1220.669168][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1220.669171][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 1220.669178][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 1220.669182][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000282
[ 1220.669186][    C2] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1220.669188][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1220.669190][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1220.669192][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1220.669194][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1220.669197][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1220.669199][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1220.669203][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1220.669205][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1220.669214][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1220.669215][    C2] PKRU: 55555554
[ 1220.669217][    C2] Call Trace:
[ 1220.669220][    C2]  <TASK>
[ 1220.669224][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1220.669237][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1220.669241][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1220.669246][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1220.669252][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1220.669261][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1220.669265][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1220.669268][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1220.669271][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1220.669278][ C2] xa_store (lib/xarray.c:1734) 
[ 1220.669282][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1220.669291][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1220.669296][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1220.669300][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1220.669302][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1220.669310][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1220.669313][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1220.669321][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1220.669325][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1220.669331][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1220.669339][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1220.669344][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1220.669353][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1220.669358][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1220.669364][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1220.669369][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1220.669373][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1220.669378][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1220.669381][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1220.669384][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1220.669391][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1220.669396][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1220.669401][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1220.669407][    C2] RIP: 0033:0x7f439756d93b
[ 1220.669413][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1220.669415][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1220.669419][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1220.669421][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1220.669423][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1220.669425][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1220.669427][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1228.669142][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1228.669157][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1228.669161][ C1] softirqs last disabled at (0): 0x0 
| [ 1228.669176][    C1] Tainted: [L]=SOFTLOCKUP
[ 1228.669177][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1228.669180][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 1228.669188][ C1] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 1228.669191][    C1] RSP: 0018:ffffc900034b7a00 EFLAGS: 00000282
[ 1228.669195][    C1] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1228.669197][    C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1228.669199][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1228.669201][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1228.669204][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1228.669206][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1228.669208][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1228.669212][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1228.669214][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1228.669215][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1228.669217][    C1] PKRU: 55555554
[ 1228.669218][    C1] Call Trace:
[ 1228.669222][    C1]  <TASK>
[ 1228.669226][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1228.669238][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1228.669241][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1228.669247][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1228.669251][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1228.669259][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1228.669263][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1228.669268][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1228.669271][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1228.669279][ C1] xa_store (lib/xarray.c:1734) 
[ 1228.669284][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1228.669291][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1228.669296][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1228.669299][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1228.669302][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1228.669309][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1228.669313][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1228.669320][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1228.669324][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1228.669329][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1228.669337][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1228.669342][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1228.669351][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1228.669355][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1228.669361][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1228.669367][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1228.669372][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1228.669377][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1228.669380][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1228.669384][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1228.669391][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1228.669395][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1228.669402][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1228.669407][    C1] RIP: 0033:0x7f439756d93b
[ 1228.669412][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1228.669415][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1228.669418][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1228.669420][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1228.669422][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1228.669424][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1228.669426][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1228.670140][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1228.670149][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1228.670152][ C3] softirqs last disabled at (0): 0x0 
| [ 1228.670166][    C3] Tainted: [L]=SOFTLOCKUP
[ 1228.670168][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1228.670170][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1228.670179][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1228.670183][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1228.670186][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1228.670188][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1228.670190][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1228.670192][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1228.670194][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1228.670196][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1228.670198][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1228.670202][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1228.670204][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1228.670205][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1228.670207][    C3] PKRU: 55555554
[ 1228.670208][    C3] Call Trace:
[ 1228.670213][    C3]  <IRQ>
[ 1228.670214][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1228.670223][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1228.670229][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1228.670232][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1228.670249][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1228.670255][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1228.670259][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1228.670263][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1228.670267][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1228.670271][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1228.670273][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1228.670276][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1228.670279][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1228.670285][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1228.670290][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1228.670293][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1228.670299][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1228.670304][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1228.670309][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1228.670314][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1228.670320][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1228.670327][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1228.670335][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1228.670338][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1228.670341][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1228.670344][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1228.670347][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1228.670350][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1228.670359][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1228.670362][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1228.670365][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1228.670371][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1228.670378][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1228.670381][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1228.670384][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1228.670389][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1228.670392][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1228.670397][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1228.670402][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1228.670404][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1228.670410][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1228.670414][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1228.670417][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1228.670422][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1228.670426][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1228.670432][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1228.670436][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1228.670439][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1228.670444][    C3]  </IRQ>
[ 1228.670445][    C3]  <TASK>
[ 1228.670447][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1228.670457][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1228.670462][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1228.670466][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1228.670471][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1228.670474][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1228.670477][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1228.670480][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1228.670482][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1228.670486][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1228.670492][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1228.670498][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1228.670502][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1228.670507][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1228.670510][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1228.670514][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1228.670517][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1228.670522][ C3] xas_alloc (lib/xarray.c:378) 
[ 1228.670526][ C3] xas_create (lib/xarray.c:685) 
[ 1228.670533][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1228.670537][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1228.670541][ C3] __xa_store (lib/xarray.c:1703) 
[ 1228.670545][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1228.670549][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1228.670552][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1228.670555][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1228.670560][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1228.670564][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1228.670568][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1228.670573][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1228.670576][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1228.670578][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1228.670582][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1228.670585][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1228.670590][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1228.670594][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1228.670599][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1228.670603][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1228.670608][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1228.670620][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1228.670624][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1228.670630][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1228.670635][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1228.670638][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1228.670642][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1228.670644][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1228.670647][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1228.670656][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1228.670660][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1228.670665][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1228.670669][    C3] RIP: 0033:0x7f439756d93b
[ 1228.670674][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1228.670677][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1228.670680][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1228.670682][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1228.670684][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1228.670685][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1228.670687][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1244.656136][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1244.656144][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1244.656148][ C0] softirqs last disabled at (0): 0x0 
| [ 1244.656160][    C0] Tainted: [L]=SOFTLOCKUP
[ 1244.656162][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1244.656164][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1244.656173][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1244.656176][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1244.656179][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1244.656181][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1244.656183][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1244.656185][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1244.656187][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1244.656189][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1244.656191][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1244.656196][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1244.656198][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1244.656199][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1244.656201][    C0] PKRU: 55555554
[ 1244.656202][    C0] Call Trace:
[ 1244.656206][    C0]  <TASK>
[ 1244.656210][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1244.656214][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1244.656220][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1244.656224][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1244.656232][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1244.656236][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1244.656239][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1244.656242][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1244.656249][ C0] xa_store (lib/xarray.c:1734) 
[ 1244.656254][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1244.656260][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1244.656265][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1244.656268][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1244.656271][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1244.656277][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1244.656281][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1244.656288][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1244.656292][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1244.656304][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1244.656311][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1244.656316][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1244.656325][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1244.656329][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1244.656336][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1244.656342][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1244.656345][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1244.656349][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1244.656352][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1244.656356][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1244.656363][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1244.656366][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1244.656372][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1244.656377][    C0] RIP: 0033:0x7f439756d93b
[ 1244.656382][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1244.656385][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1244.656388][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1244.656390][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1244.656391][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1244.656393][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1244.656395][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1248.669143][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1248.669154][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1248.669158][ C2] softirqs last disabled at (0): 0x0 
| [ 1248.669171][    C2] Tainted: [L]=SOFTLOCKUP
[ 1248.669173][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1248.669176][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1248.669186][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1248.669190][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1248.669193][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1248.669196][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1248.669198][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1248.669200][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1248.669202][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1248.669204][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1248.669207][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1248.669217][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1248.669219][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1248.669221][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1248.669224][    C2] PKRU: 55555554
[ 1248.669225][    C2] Call Trace:
[ 1248.669229][    C2]  <TASK>
[ 1248.669234][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1248.669238][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1248.669244][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1248.669249][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1248.669257][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1248.669261][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1248.669265][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1248.669268][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1248.669275][ C2] xa_store (lib/xarray.c:1734) 
[ 1248.669280][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1248.669287][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1248.669292][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1248.669295][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1248.669298][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1248.669306][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1248.669310][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1248.669318][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1248.669322][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1248.669327][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1248.669335][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1248.669340][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1248.669349][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1248.669353][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1248.669361][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1248.669366][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1248.669369][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1248.669375][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1248.669378][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1248.669382][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1248.669390][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1248.669394][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1248.669399][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1248.669406][    C2] RIP: 0033:0x7f439756d93b
[ 1248.669411][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1248.669414][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1248.669418][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1248.669420][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1248.669422][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1248.669424][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1248.669426][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1256.669141][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1256.669152][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1256.669156][ C1] softirqs last disabled at (0): 0x0 
| [ 1256.669169][    C1] Tainted: [L]=SOFTLOCKUP
[ 1256.669171][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1256.669174][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1256.669185][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1256.669188][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1256.669191][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1256.669194][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1256.669196][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1256.669198][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1256.669200][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1256.669202][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1256.669204][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1256.669209][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1256.669210][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1256.669212][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1256.669214][    C1] PKRU: 55555554
[ 1256.669215][    C1] Call Trace:
[ 1256.669220][    C1]  <TASK>
[ 1256.669224][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1256.669228][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1256.669234][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1256.669238][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1256.669246][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1256.669250][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1256.669253][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1256.669256][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1256.669263][ C1] xa_store (lib/xarray.c:1734) 
[ 1256.669268][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1256.669275][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1256.669280][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1256.669283][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1256.669286][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1256.669293][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1256.669303][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1256.669312][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1256.669316][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1256.669321][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1256.669329][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1256.669334][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1256.669344][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1256.669348][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1256.669355][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1256.669360][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1256.669364][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1256.669369][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1256.669372][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1256.669376][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1256.669383][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1256.669388][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1256.669393][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1256.669399][    C1] RIP: 0033:0x7f439756d93b
[ 1256.669405][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1256.669408][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1256.669411][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1256.669413][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1256.669415][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1256.669417][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1256.669419][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1256.670141][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1256.670151][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1256.670155][ C3] softirqs last disabled at (0): 0x0 
| [ 1256.670168][    C3] Tainted: [L]=SOFTLOCKUP
[ 1256.670170][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1256.670172][ C3] RIP: 0010:kasan_check_range (./include/linux/kasan.h:64 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 1256.670179][ C3] Code: 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df <4d> 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d
All code
========
   0:	5b                   	pop    %rbx
   1:	5d                   	pop    %rbp
   2:	41 5c                	pop    %r12
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  10:	7f ff ff 
  13:	48 39 c7             	cmp    %rax,%rdi
  16:	76 dd                	jbe    0xfffffffffffffff5
  18:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  1d:	48 89 fd             	mov    %rdi,%rbp
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df 
  2a:*	4d 89 d1             	mov    %r10,%r9		<-- trapping instruction
  2d:	48 c1 ed 03          	shr    $0x3,%rbp
  31:	49 c1 e9 03          	shr    $0x3,%r9
  35:	48 01 c5             	add    %rax,%rbp
  38:	49 01 c1             	add    %rax,%r9
  3b:	48 89 e8             	mov    %rbp,%rax
  3e:	49                   	rex.WB
  3f:	8d                   	.byte 0x8d

Code starting with the faulting instruction
===========================================
   0:	4d 89 d1             	mov    %r10,%r9
   3:	48 c1 ed 03          	shr    $0x3,%rbp
   7:	49 c1 e9 03          	shr    $0x3,%r9
   b:	48 01 c5             	add    %rax,%rbp
   e:	49 01 c1             	add    %rax,%r9
  11:	48 89 e8             	mov    %rbp,%rax
  14:	49                   	rex.WB
  15:	8d                   	.byte 0x8d
[ 1256.670183][    C3] RSP: 0018:ffffc90000270a28 EFLAGS: 00000212
[ 1256.670186][    C3] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1256.670189][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1256.670190][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1256.670193][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1256.670195][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1256.670197][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1256.670199][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1256.670204][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1256.670206][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1256.670208][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1256.670210][    C3] PKRU: 55555554
[ 1256.670212][    C3] Call Trace:
[ 1256.670216][    C3]  <IRQ>
[ 1256.670220][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1256.670229][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1256.670233][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1256.670237][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1256.670241][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1256.670246][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1256.670251][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1256.670255][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1256.670259][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1256.670262][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1256.670266][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1256.670269][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1256.670271][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1256.670274][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1256.670280][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1256.670285][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1256.670288][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1256.670292][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1256.670298][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1256.670302][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1256.670308][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1256.670314][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1256.670322][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1256.670329][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1256.670332][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1256.670335][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1256.670339][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1256.670343][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1256.670345][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1256.670353][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1256.670356][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1256.670359][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1256.670363][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1256.670369][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1256.670372][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1256.670382][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1256.670386][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1256.670389][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1256.670394][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1256.670398][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1256.670401][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1256.670407][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1256.670412][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1256.670415][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1256.670420][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1256.670425][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1256.670431][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1256.670435][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1256.670438][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1256.670442][    C3]  </IRQ>
[ 1256.670443][    C3]  <TASK>
[ 1256.670445][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1256.670451][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1256.670455][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1256.670458][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1256.670461][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1256.670463][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1256.670465][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1256.670467][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1256.670469][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1256.670473][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1256.670479][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1256.670484][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1256.670488][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1256.670492][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1256.670495][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1256.670500][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1256.670502][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1256.670507][ C3] xas_alloc (lib/xarray.c:378) 
[ 1256.670512][ C3] xas_create (lib/xarray.c:685) 
[ 1256.670518][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1256.670522][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1256.670526][ C3] __xa_store (lib/xarray.c:1703) 
[ 1256.670530][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1256.670535][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1256.670537][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1256.670540][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1256.670545][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1256.670549][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1256.670552][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1256.670557][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1256.670560][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1256.670563][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1256.670567][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1256.670570][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1256.670576][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1256.670580][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1256.670585][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1256.670589][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1256.670594][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1256.670603][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1256.670607][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1256.670614][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1256.670619][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1256.670622][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1256.670626][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1256.670629][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1256.670632][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1256.670640][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1256.670643][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1256.670649][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1256.670652][    C3] RIP: 0033:0x7f439756d93b
[ 1256.670657][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1256.670659][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1256.670663][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1256.670665][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1256.670667][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1256.670668][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1256.670671][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1272.656139][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1272.656147][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1272.656151][ C0] softirqs last disabled at (0): 0x0 
| [ 1272.656164][    C0] Tainted: [L]=SOFTLOCKUP
[ 1272.656166][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1272.656168][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1272.656178][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1272.656181][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1272.656184][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1272.656187][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1272.656189][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1272.656191][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1272.656193][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1272.656195][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1272.656197][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1272.656202][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1272.656203][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1272.656205][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1272.656207][    C0] PKRU: 55555554
[ 1272.656208][    C0] Call Trace:
[ 1272.656213][    C0]  <TASK>
[ 1272.656218][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1272.656222][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1272.656228][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1272.656232][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1272.656241][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1272.656245][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1272.656248][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1272.656252][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1272.656258][ C0] xa_store (lib/xarray.c:1734) 
[ 1272.656263][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1272.656270][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1272.656274][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1272.656277][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1272.656280][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1272.656288][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1272.656291][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1272.656300][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1272.656304][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1272.656309][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1272.656317][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1272.656322][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1272.656331][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1272.656335][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1272.656342][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1272.656347][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1272.656351][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1272.656356][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1272.656359][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1272.656363][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1272.656370][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1272.656374][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1272.656379][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1272.656384][    C0] RIP: 0033:0x7f439756d93b
[ 1272.656388][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1272.656391][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1272.656394][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1272.656396][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1272.656398][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1272.656400][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1272.656402][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1276.669142][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1276.669153][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1276.669157][ C2] softirqs last disabled at (0): 0x0 
| [ 1276.669170][    C2] Tainted: [L]=SOFTLOCKUP
[ 1276.669172][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1276.669175][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 1276.669183][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 1276.669186][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000282
[ 1276.669189][    C2] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1276.669192][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1276.669194][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1276.669196][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1276.669198][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1276.669200][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1276.669204][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1276.669207][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1276.669209][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1276.669211][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1276.669213][    C2] PKRU: 55555554
[ 1276.669214][    C2] Call Trace:
[ 1276.669218][    C2]  <TASK>
[ 1276.669223][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1276.669233][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1276.669236][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1276.669242][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1276.669246][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1276.669253][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1276.669257][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1276.669260][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1276.669263][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1276.669271][ C2] xa_store (lib/xarray.c:1734) 
[ 1276.669276][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1276.669283][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1276.669288][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1276.669291][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1276.669294][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1276.669301][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1276.669305][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1276.669312][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1276.669316][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1276.669321][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1276.669329][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1276.669334][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1276.669343][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1276.669348][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1276.669354][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1276.669359][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1276.669363][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1276.669368][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1276.669371][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1276.669375][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1276.669382][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1276.669387][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1276.669393][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1276.669398][    C2] RIP: 0033:0x7f439756d93b
[ 1276.669404][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1276.669407][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1276.669410][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1276.669413][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1276.669415][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1276.669417][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1276.669419][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1282.121727][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 1282.122018][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 1282.122279][    C1] NMI backtrace for cpu 1
| [ 1282.122299][    C1] Tainted: [L]=SOFTLOCKUP
[ 1282.122301][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1282.122304][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1282.122317][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1282.122321][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1282.122325][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1282.122327][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1282.122330][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1282.122332][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1282.122334][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1282.122336][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1282.122339][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1282.122342][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1282.122344][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1282.122346][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1282.122348][    C1] PKRU: 55555554
[ 1282.122349][    C1] Call Trace:
[ 1282.122353][    C1]  <TASK>
[ 1282.122358][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1282.122362][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1282.122368][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1282.122372][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1282.122380][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1282.122384][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1282.122387][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1282.122390][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1282.122397][ C1] xa_store (lib/xarray.c:1734) 
[ 1282.122401][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1282.122408][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1282.122413][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1282.122424][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1282.122427][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1282.122434][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1282.122437][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1282.122445][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1282.122449][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1282.122454][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1282.122463][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1282.122467][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1282.122477][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1282.122482][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1282.122489][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1282.122496][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1282.122499][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1282.122505][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1282.122508][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1282.122512][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1282.122519][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1282.122524][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1282.122529][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1282.122535][    C1] RIP: 0033:0x7f439756d93b
[ 1282.122541][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1282.122544][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1282.122548][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1282.122550][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1282.122552][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1282.122554][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1282.122556][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1282.122554][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 1282.122556][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1282.122562][    C1]  </TASK>
| [ 1282.123282][    C3] Tainted: [L]=SOFTLOCKUP
[ 1282.123284][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1282.123286][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1282.123293][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1282.123296][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1282.123300][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1282.123302][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1282.123304][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1282.123306][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1282.123309][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1282.123311][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1282.123314][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1282.123319][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1282.123321][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1282.123324][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1282.123326][    C3] PKRU: 55555554
[ 1282.123328][    C3] Call Trace:
[ 1282.123331][    C3]  <IRQ>
[ 1282.123333][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1282.123340][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1282.123345][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1282.123348][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1282.123352][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1282.123357][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1282.123361][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1282.123366][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1282.123369][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1282.123372][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1282.123375][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1282.123377][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1282.123380][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1282.123386][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1282.123390][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1282.123393][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1282.123397][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1282.123402][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1282.123406][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1282.123412][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1282.123416][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1282.123424][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1282.123431][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1282.123434][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1282.123437][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1282.123441][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1282.123444][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1282.123447][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1282.123454][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1282.123457][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1282.123460][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1282.123465][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1282.123469][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1282.123472][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1282.123475][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1282.123479][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1282.123482][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1282.123487][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1282.123491][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1282.123494][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1282.123499][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1282.123502][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1282.123506][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1282.123511][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1282.123515][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1282.123520][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1282.123524][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1282.123527][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1282.123531][    C3]  </IRQ>
[ 1282.123532][    C3]  <TASK>
[ 1282.123534][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1282.123539][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1282.123542][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1282.123544][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1282.123547][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1282.123549][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1282.123550][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1282.123552][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1282.123554][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1282.123558][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1282.123564][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1282.123569][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1282.123572][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1282.123577][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1282.123580][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1282.123584][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1282.123586][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1282.123591][ C3] xas_alloc (lib/xarray.c:378) 
[ 1282.123596][ C3] xas_create (lib/xarray.c:685) 
[ 1282.123601][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1282.123605][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1282.123609][ C3] __xa_store (lib/xarray.c:1703) 
[ 1282.123613][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1282.123618][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1282.123621][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1282.123624][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1282.123629][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1282.123632][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1282.123635][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1282.123644][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1282.123647][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1282.123649][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1282.123654][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1282.123657][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1282.123662][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1282.123666][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1282.123671][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1282.123675][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1282.123680][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1282.123688][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1282.123692][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1282.123699][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1282.123705][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1282.123708][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1282.123712][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1282.123714][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1282.123718][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1282.123725][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1282.123728][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1282.123734][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1282.123737][    C3] RIP: 0033:0x7f439756d93b
[ 1282.123741][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1282.123744][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1282.123747][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1282.123749][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1282.123750][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1282.123752][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1282.123753][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1300.656136][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1300.656144][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1300.656147][ C0] softirqs last disabled at (0): 0x0 
| [ 1300.656160][    C0] Tainted: [L]=SOFTLOCKUP
[ 1300.656162][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1300.656164][ C0] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1300.656172][ C0] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 1300.656175][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1300.656178][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1300.656181][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1300.656183][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1300.656184][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1300.656186][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1300.656189][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1300.656191][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1300.656195][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1300.656197][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1300.656198][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1300.656200][    C0] PKRU: 55555554
[ 1300.656202][    C0] Call Trace:
[ 1300.656205][    C0]  <TASK>
[ 1300.656210][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1300.656214][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1300.656220][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1300.656224][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1300.656232][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1300.656236][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1300.656239][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1300.656242][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1300.656249][ C0] xa_store (lib/xarray.c:1734) 
[ 1300.656253][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1300.656260][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1300.656266][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1300.656269][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1300.656271][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1300.656277][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1300.656281][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1300.656289][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1300.656292][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1300.656297][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1300.656304][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1300.656309][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1300.656317][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1300.656321][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1300.656328][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1300.656333][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1300.656337][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1300.656341][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1300.656344][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1300.656348][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1300.656355][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1300.656359][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1300.656364][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1300.656370][    C0] RIP: 0033:0x7f439756d93b
[ 1300.656374][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1300.656377][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1300.656380][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1300.656381][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1300.656383][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1300.656385][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1300.656387][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1304.669144][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1304.669155][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1304.669159][ C2] softirqs last disabled at (0): 0x0 
| [ 1304.669173][    C2] Tainted: [L]=SOFTLOCKUP
[ 1304.669175][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1304.669178][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1304.669189][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1304.669193][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1304.669196][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1304.669199][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1304.669201][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1304.669203][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1304.669206][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1304.669207][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1304.669210][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1304.669214][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1304.669216][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1304.669217][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1304.669219][    C2] PKRU: 55555554
[ 1304.669220][    C2] Call Trace:
[ 1304.669225][    C2]  <TASK>
[ 1304.669229][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1304.669234][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1304.669239][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1304.669244][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1304.669259][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1304.669264][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1304.669266][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1304.669269][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1304.669276][ C2] xa_store (lib/xarray.c:1734) 
[ 1304.669281][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1304.669287][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1304.669293][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1304.669296][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1304.669299][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1304.669306][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1304.669310][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1304.669318][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1304.669322][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1304.669327][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1304.669335][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1304.669340][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1304.669349][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1304.669353][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1304.669360][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1304.669365][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1304.669369][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1304.669375][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1304.669378][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1304.669382][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1304.669389][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1304.669393][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1304.669399][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1304.669405][    C2] RIP: 0033:0x7f439756d93b
[ 1304.669410][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1304.669413][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1304.669416][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1304.669419][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1304.669421][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1304.669423][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1304.669425][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1308.669140][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1308.669150][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1308.669154][ C1] softirqs last disabled at (0): 0x0 
| [ 1308.669168][    C1] Tainted: [L]=SOFTLOCKUP
[ 1308.669169][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1308.669172][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1308.669182][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1308.669186][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1308.669189][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1308.669191][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1308.669194][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1308.669196][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1308.669198][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1308.669200][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1308.669203][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1308.669207][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1308.669208][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1308.669210][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1308.669212][    C1] PKRU: 55555554
[ 1308.669213][    C1] Call Trace:
[ 1308.669217][    C1]  <TASK>
[ 1308.669221][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1308.669225][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1308.669240][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1308.669244][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1308.669252][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1308.669256][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1308.669259][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1308.669262][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1308.669269][ C1] xa_store (lib/xarray.c:1734) 
[ 1308.669274][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1308.669281][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1308.669286][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1308.669289][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1308.669292][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1308.669299][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1308.669302][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1308.669310][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1308.669314][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1308.669319][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1308.669327][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1308.669332][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1308.669342][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1308.669346][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1308.669352][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1308.669357][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1308.669361][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1308.669366][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1308.669370][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1308.669373][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1308.669381][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1308.669385][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1308.669391][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1308.669396][    C1] RIP: 0033:0x7f439756d93b
[ 1308.669401][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1308.669404][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1308.669407][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1308.669410][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1308.669412][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1308.669414][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1308.669416][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1308.670138][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1308.670147][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1308.670150][ C3] softirqs last disabled at (0): 0x0 
| [ 1308.670163][    C3] Tainted: [L]=SOFTLOCKUP
[ 1308.670165][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1308.670167][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1308.670174][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1308.670177][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1308.670181][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1308.670189][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1308.670191][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1308.670193][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1308.670195][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1308.670197][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1308.670200][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1308.670204][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1308.670206][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1308.670207][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1308.670209][    C3] PKRU: 55555554
[ 1308.670213][    C3] Call Trace:
[ 1308.670216][    C3]  <IRQ>
[ 1308.670218][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1308.670224][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1308.670229][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1308.670232][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1308.670237][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1308.670242][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1308.670245][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1308.670250][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1308.670253][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1308.670256][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1308.670259][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1308.670262][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1308.670265][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1308.670270][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1308.670275][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1308.670278][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1308.670282][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1308.670287][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1308.670292][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1308.670297][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1308.670301][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1308.670310][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1308.670316][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1308.670320][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1308.670323][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1308.670326][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1308.670329][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1308.670332][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1308.670338][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1308.670341][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1308.670344][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1308.670348][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1308.670354][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1308.670357][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1308.670360][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1308.670365][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1308.670369][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1308.670374][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1308.670378][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1308.670381][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1308.670386][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1308.670390][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1308.670394][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1308.670398][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1308.670403][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1308.670409][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1308.670412][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1308.670416][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1308.670420][    C3]  </IRQ>
[ 1308.670421][    C3]  <TASK>
[ 1308.670422][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1308.670428][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1308.670431][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1308.670434][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1308.670437][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1308.670439][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1308.670440][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1308.670442][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1308.670444][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1308.670448][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1308.670454][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1308.670460][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1308.670463][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1308.670468][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1308.670471][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1308.670475][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1308.670478][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1308.670483][ C3] xas_alloc (lib/xarray.c:378) 
[ 1308.670487][ C3] xas_create (lib/xarray.c:685) 
[ 1308.670493][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1308.670497][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1308.670501][ C3] __xa_store (lib/xarray.c:1703) 
[ 1308.670505][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1308.670510][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1308.670513][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1308.670515][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1308.670520][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1308.670524][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1308.670527][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1308.670532][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1308.670535][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1308.670540][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1308.670544][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1308.670547][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1308.670552][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1308.670558][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1308.670563][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1308.670567][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1308.670572][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1308.670580][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1308.670584][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1308.670591][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1308.670596][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1308.670599][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1308.670603][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1308.670605][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1308.670609][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1308.670616][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1308.670620][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1308.670626][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1308.670629][    C3] RIP: 0033:0x7f439756d93b
[ 1308.670634][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1308.670636][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1308.670639][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1308.670641][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1308.670643][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1308.670645][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1308.670647][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1328.656136][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1328.656144][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1328.656147][ C0] softirqs last disabled at (0): 0x0 
| [ 1328.656159][    C0] Tainted: [L]=SOFTLOCKUP
[ 1328.656161][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1328.656163][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1328.656171][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1328.656174][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1328.656177][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1328.656180][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1328.656181][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1328.656183][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1328.656185][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1328.656187][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1328.656190][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1328.656194][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1328.656197][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1328.656198][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1328.656200][    C0] PKRU: 55555554
[ 1328.656201][    C0] Call Trace:
[ 1328.656206][    C0]  <TASK>
[ 1328.656209][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1328.656213][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1328.656218][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1328.656222][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1328.656231][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1328.656234][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1328.656237][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1328.656240][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1328.656247][ C0] xa_store (lib/xarray.c:1734) 
[ 1328.656252][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1328.656257][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1328.656263][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1328.656266][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1328.656269][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1328.656280][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1328.656284][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1328.656291][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1328.656295][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1328.656300][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1328.656307][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1328.656312][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1328.656320][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1328.656324][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1328.656331][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1328.656336][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1328.656339][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1328.656344][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1328.656347][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1328.656350][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1328.656357][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1328.656361][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1328.656366][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1328.656371][    C0] RIP: 0033:0x7f439756d93b
[ 1328.656375][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1328.656378][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1328.656382][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1328.656384][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1328.656386][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1328.656387][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1328.656389][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1332.669142][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1332.669152][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1332.669156][ C2] softirqs last disabled at (0): 0x0 
| [ 1332.669169][    C2] Tainted: [L]=SOFTLOCKUP
[ 1332.669171][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1332.669174][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1332.669184][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1332.669188][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1332.669191][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1332.669194][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1332.669196][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1332.669198][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1332.669200][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1332.669202][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1332.669204][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1332.669208][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1332.669210][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1332.669212][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1332.669213][    C2] PKRU: 55555554
[ 1332.669214][    C2] Call Trace:
[ 1332.669220][    C2]  <TASK>
[ 1332.669224][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1332.669228][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1332.669234][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1332.669239][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1332.669246][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1332.669250][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1332.669253][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1332.669256][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1332.669263][ C2] xa_store (lib/xarray.c:1734) 
[ 1332.669268][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1332.669274][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1332.669279][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1332.669290][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1332.669294][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1332.669301][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1332.669304][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1332.669312][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1332.669316][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1332.669321][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1332.669329][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1332.669334][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1332.669344][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1332.669348][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1332.669355][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1332.669360][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1332.669364][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1332.669369][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1332.669372][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1332.669376][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1332.669383][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1332.669387][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1332.669393][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1332.669399][    C2] RIP: 0033:0x7f439756d93b
[ 1332.669404][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1332.669407][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1332.669410][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1332.669412][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1332.669414][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1332.669416][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1332.669418][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1336.669142][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1336.669153][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1336.669157][ C1] softirqs last disabled at (0): 0x0 
| [ 1336.669171][    C1] Tainted: [L]=SOFTLOCKUP
[ 1336.669173][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1336.669176][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1336.669187][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1336.669190][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1336.669194][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1336.669196][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1336.669198][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1336.669200][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1336.669203][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1336.669205][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1336.669207][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1336.669211][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1336.669213][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1336.669215][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1336.669217][    C1] PKRU: 55555554
[ 1336.669218][    C1] Call Trace:
[ 1336.669223][    C1]  <TASK>
[ 1336.669227][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1336.669232][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1336.669238][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1336.669243][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1336.669250][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1336.669255][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1336.669258][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1336.669261][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1336.669268][ C1] xa_store (lib/xarray.c:1734) 
[ 1336.669282][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1336.669289][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1336.669294][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1336.669297][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1336.669300][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1336.669307][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1336.669311][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1336.669319][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1336.669323][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1336.669328][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1336.669335][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1336.669340][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1336.669350][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1336.669354][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1336.669361][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1336.669366][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1336.669370][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1336.669375][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1336.669379][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1336.669382][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1336.669390][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1336.669394][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1336.669399][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1336.669405][    C1] RIP: 0033:0x7f439756d93b
[ 1336.669411][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1336.669414][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1336.669417][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1336.669419][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1336.669421][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1336.669423][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1336.669425][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1336.670136][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1336.670144][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1336.670147][ C3] softirqs last disabled at (0): 0x0 
| [ 1336.670159][    C3] Tainted: [L]=SOFTLOCKUP
[ 1336.670160][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1336.670163][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1336.670170][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1336.670173][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1336.670176][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1336.670178][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1336.670180][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1336.670182][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1336.670184][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1336.670186][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1336.670188][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1336.670192][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1336.670195][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1336.670196][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1336.670198][    C3] PKRU: 55555554
[ 1336.670199][    C3] Call Trace:
[ 1336.670203][    C3]  <IRQ>
[ 1336.670205][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1336.670210][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1336.670216][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1336.670219][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1336.670223][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1336.670228][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1336.670231][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1336.670241][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1336.670244][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1336.670248][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1336.670250][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1336.670253][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1336.670256][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1336.670262][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1336.670267][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1336.670270][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1336.670274][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1336.670279][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1336.670284][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1336.670289][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1336.670293][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1336.670301][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1336.670308][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1336.670311][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1336.670314][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1336.670321][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1336.670324][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1336.670327][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1336.670333][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1336.670336][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1336.670339][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1336.670343][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1336.670348][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1336.670352][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1336.670355][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1336.670359][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1336.670362][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1336.670367][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1336.670372][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1336.670374][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1336.670380][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1336.670384][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1336.670387][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1336.670392][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1336.670397][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1336.670402][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1336.670406][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1336.670410][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1336.670414][    C3]  </IRQ>
[ 1336.670415][    C3]  <TASK>
[ 1336.670417][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1336.670423][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1336.670426][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1336.670429][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1336.670431][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1336.670433][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1336.670436][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1336.670437][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1336.670439][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1336.670443][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1336.670449][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1336.670455][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1336.670458][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1336.670463][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1336.670466][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1336.670470][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1336.670472][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1336.670477][ C3] xas_alloc (lib/xarray.c:378) 
[ 1336.670482][ C3] xas_create (lib/xarray.c:685) 
[ 1336.670488][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1336.670493][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1336.670496][ C3] __xa_store (lib/xarray.c:1703) 
[ 1336.670500][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1336.670505][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1336.670508][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1336.670511][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1336.670516][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1336.670520][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1336.670524][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1336.670529][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1336.670531][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1336.670534][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1336.670538][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1336.670542][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1336.670546][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1336.670550][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1336.670555][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1336.670559][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1336.670564][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1336.670573][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1336.670576][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1336.670583][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1336.670590][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1336.670593][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1336.670597][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1336.670599][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1336.670603][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1336.670610][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1336.670613][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1336.670619][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1336.670622][    C3] RIP: 0033:0x7f439756d93b
[ 1336.670626][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1336.670629][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1336.670632][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1336.670634][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1336.670636][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1336.670638][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1336.670640][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1356.656163][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1356.656173][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1356.656177][ C0] softirqs last disabled at (0): 0x0 
| [ 1356.656196][    C0] Tainted: [L]=SOFTLOCKUP
[ 1356.656198][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1356.656202][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1356.656212][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1356.656215][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1356.656221][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1356.656224][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1356.656226][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1356.656228][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1356.656230][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1356.656232][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1356.656235][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1356.656239][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1356.656241][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1356.656242][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1356.656244][    C0] PKRU: 55555554
[ 1356.656245][    C0] Call Trace:
[ 1356.656251][    C0]  <TASK>
[ 1356.656257][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1356.656261][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1356.656267][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1356.656272][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1356.656280][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1356.656284][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1356.656287][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1356.656290][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1356.656300][ C0] xa_store (lib/xarray.c:1734) 
[ 1356.656307][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1356.656317][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1356.656323][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1356.656326][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1356.656329][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1356.656336][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1356.656340][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1356.656347][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1356.656351][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1356.656356][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1356.656365][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1356.656370][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1356.656383][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1356.656387][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1356.656396][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1356.656402][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1356.656406][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1356.656411][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1356.656414][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1356.656418][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1356.656426][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1356.656430][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1356.656436][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1356.656441][    C0] RIP: 0033:0x7f439756d93b
[ 1356.656446][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1356.656448][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1356.656452][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1356.656454][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1356.656456][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1356.656458][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1356.656460][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1360.135605][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 1360.135898][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 1360.136173][    C1] NMI backtrace for cpu 1
| [ 1360.136199][    C1] Tainted: [L]=SOFTLOCKUP
[ 1360.136202][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1360.136205][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:89 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 1360.136218][ C1] Code: 11 80 38 00 74 ef 4d 8d 1c 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea eb 09 <48> 83 c0 01 48 39 d0 74 a5 80 38 00 74 f2 e9 74 ff ff ff b8 01 00
All code
========
   0:	11 80 38 00 74 ef    	adc    %eax,-0x108bffc8(%rax)
   6:	4d 8d 1c 2c          	lea    (%r12,%rbp,1),%r11
   a:	48 89 c2             	mov    %rax,%rdx
   d:	48 85 c0             	test   %rax,%rax
  10:	75 b0                	jne    0xffffffffffffffc2
  12:	48 89 da             	mov    %rbx,%rdx
  15:	4c 89 d8             	mov    %r11,%rax
  18:	4c 29 da             	sub    %r11,%rdx
  1b:	e9 49 ff ff ff       	jmp    0xffffffffffffff69
  20:	48 85 d2             	test   %rdx,%rdx
  23:	74 b3                	je     0xffffffffffffffd8
  25:	48 01 ea             	add    %rbp,%rdx
  28:	eb 09                	jmp    0x33
  2a:*	48 83 c0 01          	add    $0x1,%rax		<-- trapping instruction
  2e:	48 39 d0             	cmp    %rdx,%rax
  31:	74 a5                	je     0xffffffffffffffd8
  33:	80 38 00             	cmpb   $0x0,(%rax)
  36:	74 f2                	je     0x2a
  38:	e9 74 ff ff ff       	jmp    0xffffffffffffffb1
  3d:	b8                   	.byte 0xb8
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	48 83 c0 01          	add    $0x1,%rax
   4:	48 39 d0             	cmp    %rdx,%rax
   7:	74 a5                	je     0xffffffffffffffae
   9:	80 38 00             	cmpb   $0x0,(%rax)
   c:	74 f2                	je     0x0
   e:	e9 74 ff ff ff       	jmp    0xffffffffffffff87
  13:	b8                   	.byte 0xb8
  14:	01 00                	add    %eax,(%rax)
[ 1360.136223][    C1] RSP: 0018:ffffc900034b79f8 EFLAGS: 00000246
[ 1360.136230][    C1] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 1360.136238][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1360.136241][    C1] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1360.136245][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1360.136248][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1360.136252][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1360.136256][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1360.136262][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1360.136266][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1360.136269][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1360.136271][    C1] PKRU: 55555554
[ 1360.136274][    C1] Call Trace:
[ 1360.136279][    C1]  <TASK>
[ 1360.136286][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1360.136298][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1360.136303][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1360.136310][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1360.136316][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1360.136327][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1360.136333][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1360.136338][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1360.136343][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1360.136353][ C1] xa_store (lib/xarray.c:1734) 
[ 1360.136360][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1360.136367][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1360.136375][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1360.136379][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1360.136383][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1360.136392][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1360.136397][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1360.136406][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1360.136416][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1360.136426][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1360.136436][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1360.136443][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1360.136456][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1360.136462][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1360.136471][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1360.136481][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1360.136486][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1360.136493][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1360.136498][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1360.136503][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1360.136512][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1360.136518][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1360.136526][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1360.136533][    C1] RIP: 0033:0x7f439756d93b
[ 1360.136542][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1360.136546][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1360.136551][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1360.136554][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1360.136557][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1360.136559][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1360.136562][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1360.136559][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 1360.136562][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1360.136569][    C1]  </TASK>
| [ 1360.137155][    C3] Tainted: [L]=SOFTLOCKUP
[ 1360.137156][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1360.137158][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1360.137165][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1360.137168][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1360.137172][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1360.137175][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1360.137177][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1360.137179][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1360.137181][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1360.137183][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1360.137188][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1360.137193][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1360.137195][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1360.137197][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1360.137199][    C3] PKRU: 55555554
[ 1360.137200][    C3] Call Trace:
[ 1360.137202][    C3]  <IRQ>
[ 1360.137203][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1360.137209][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1360.137214][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1360.137218][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1360.137224][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1360.137229][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1360.137232][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1360.137237][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1360.137240][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1360.137243][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1360.137246][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1360.137248][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1360.137251][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1360.137257][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1360.137261][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1360.137264][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1360.137268][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1360.137273][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1360.137277][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1360.137282][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1360.137286][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1360.137294][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1360.137301][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1360.137304][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1360.137307][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1360.137310][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1360.137314][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1360.137317][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1360.137324][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1360.137327][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1360.137330][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1360.137334][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1360.137339][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1360.137342][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1360.137345][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1360.137348][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1360.137352][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1360.137356][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1360.137360][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1360.137363][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1360.137368][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1360.137372][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1360.137375][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1360.137380][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1360.137384][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1360.137389][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1360.137393][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1360.137396][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1360.137399][    C3]  </IRQ>
[ 1360.137400][    C3]  <TASK>
[ 1360.137404][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1360.137408][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1360.137411][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1360.137414][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1360.137417][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1360.137419][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1360.137420][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1360.137422][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1360.137424][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1360.137428][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1360.137433][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1360.137439][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1360.137442][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1360.137447][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1360.137450][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1360.137454][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1360.137456][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1360.137461][ C3] xas_alloc (lib/xarray.c:378) 
[ 1360.137466][ C3] xas_create (lib/xarray.c:685) 
[ 1360.137472][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1360.137476][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1360.137480][ C3] __xa_store (lib/xarray.c:1703) 
[ 1360.137484][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1360.137488][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1360.137491][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1360.137494][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1360.137499][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1360.137503][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1360.137508][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1360.137513][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1360.137516][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1360.137519][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1360.137524][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1360.137528][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1360.137533][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1360.137537][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1360.137542][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1360.137546][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1360.137551][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1360.137559][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1360.137563][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1360.137570][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1360.137576][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1360.137579][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1360.137582][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1360.137585][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1360.137588][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1360.137598][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1360.137602][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1360.137608][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1360.137611][    C3] RIP: 0033:0x7f439756d93b
[ 1360.137616][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1360.137618][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1360.137622][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1360.137623][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1360.137625][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1360.137627][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1360.137629][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1360.669154][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1360.669165][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1360.669170][ C2] softirqs last disabled at (0): 0x0 
| [ 1360.669186][    C2] Tainted: [L]=SOFTLOCKUP
[ 1360.669188][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1360.669191][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 1360.669199][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 1360.669204][    C2] RSP: 0018:ffffc900034d7a00 EFLAGS: 00000282
[ 1360.669209][    C2] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1360.669212][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1360.669214][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1360.669217][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1360.669220][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1360.669222][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1360.669226][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1360.669233][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1360.669237][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1360.669239][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1360.669242][    C2] PKRU: 55555554
[ 1360.669243][    C2] Call Trace:
[ 1360.669249][    C2]  <TASK>
[ 1360.669254][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1360.669267][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1360.669271][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1360.669278][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1360.669284][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1360.669293][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1360.669299][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1360.669325][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1360.669329][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1360.669341][ C2] xa_store (lib/xarray.c:1734) 
[ 1360.669348][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1360.669355][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1360.669363][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1360.669368][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1360.669372][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1360.669381][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1360.669385][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1360.669394][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1360.669400][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1360.669407][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1360.669416][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1360.669423][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1360.669436][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1360.669442][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1360.669450][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1360.669457][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1360.669462][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1360.669469][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1360.669473][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1360.669478][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1360.669488][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1360.669494][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1360.669501][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1360.669508][    C2] RIP: 0033:0x7f439756d93b
[ 1360.669516][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1360.669520][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1360.669524][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1360.669527][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1360.669530][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1360.669532][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1360.669534][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1384.656136][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1384.656144][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1384.656148][ C0] softirqs last disabled at (0): 0x0 
| [ 1384.656160][    C0] Tainted: [L]=SOFTLOCKUP
[ 1384.656162][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1384.656164][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 1384.656171][ C0] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 1384.656174][    C0] RSP: 0018:ffffc900034c7a00 EFLAGS: 00000282
[ 1384.656189][    C0] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1384.656191][    C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1384.656193][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1384.656195][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1384.656197][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1384.656199][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1384.656202][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1384.656206][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1384.656208][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1384.656209][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1384.656211][    C0] PKRU: 55555554
[ 1384.656212][    C0] Call Trace:
[ 1384.656216][    C0]  <TASK>
[ 1384.656219][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1384.656227][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1384.656231][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1384.656239][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1384.656243][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1384.656251][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1384.656255][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1384.656257][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1384.656260][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1384.656267][ C0] xa_store (lib/xarray.c:1734) 
[ 1384.656272][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1384.656278][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1384.656283][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1384.656286][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1384.656289][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1384.656294][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1384.656298][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1384.656305][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1384.656309][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1384.656314][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1384.656320][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1384.656325][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1384.656333][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1384.656337][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1384.656342][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1384.656347][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1384.656351][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1384.656355][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1384.656358][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1384.656362][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1384.656368][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1384.656372][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1384.656377][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1384.656381][    C0] RIP: 0033:0x7f439756d93b
[ 1384.656388][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1384.656391][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1384.656394][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1384.656396][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1384.656398][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1384.656400][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1384.656402][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1384.669131][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1384.669137][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1384.669141][ C1] softirqs last disabled at (0): 0x0 
| [ 1384.669151][    C1] Tainted: [L]=SOFTLOCKUP
[ 1384.669153][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1384.669155][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1384.669160][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1384.669164][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1384.669167][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1384.669169][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1384.669171][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1384.669172][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1384.669174][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1384.669176][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1384.669179][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1384.669182][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1384.669184][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1384.669186][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1384.669188][    C1] PKRU: 55555554
[ 1384.669189][    C1] Call Trace:
[ 1384.669197][    C1]  <TASK>
[ 1384.669200][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1384.669204][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1384.669209][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1384.669212][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1384.669218][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1384.669222][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1384.669225][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1384.669228][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1384.669233][ C1] xa_store (lib/xarray.c:1734) 
[ 1384.669237][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1384.669242][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1384.669247][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1384.669252][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1384.669255][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1384.669259][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1384.669263][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1384.669268][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1384.669273][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1384.669277][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1384.669282][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1384.669286][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1384.669293][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1384.669297][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1384.669302][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1384.669307][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1384.669310][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1384.669314][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1384.669317][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1384.669320][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1384.669326][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1384.669330][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1384.669335][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1384.669338][    C1] RIP: 0033:0x7f439756d93b
[ 1384.669343][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1384.669345][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1384.669348][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1384.669351][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1384.669352][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1384.669354][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1384.669356][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1384.670123][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1384.670128][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1384.670131][ C3] softirqs last disabled at (0): 0x0 
| [ 1384.670141][    C3] Tainted: [L]=SOFTLOCKUP
[ 1384.670142][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1384.670144][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1384.670149][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1384.670152][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1384.670154][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1384.670156][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1384.670158][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1384.670160][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1384.670162][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1384.670167][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1384.670170][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1384.670173][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1384.670175][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1384.670180][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1384.670181][    C3] PKRU: 55555554
[ 1384.670183][    C3] Call Trace:
[ 1384.670185][    C3]  <IRQ>
[ 1384.670186][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1384.670190][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1384.670195][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1384.670199][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1384.670203][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1384.670207][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1384.670210][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1384.670214][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1384.670217][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1384.670221][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1384.670223][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1384.670226][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1384.670229][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1384.670233][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1384.670237][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1384.670240][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1384.670243][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1384.670248][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1384.670252][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1384.670257][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1384.670261][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1384.670266][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1384.670270][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1384.670273][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1384.670276][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1384.670280][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1384.670283][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1384.670286][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1384.670291][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1384.670294][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1384.670297][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1384.670301][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1384.670305][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1384.670308][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1384.670311][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1384.670314][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1384.670317][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1384.670321][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1384.670328][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1384.670330][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1384.670336][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1384.670340][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1384.670343][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1384.670348][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1384.670352][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1384.670358][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1384.670362][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1384.670365][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1384.670369][    C3]  </IRQ>
[ 1384.670370][    C3]  <TASK>
[ 1384.670371][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1384.670375][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1384.670378][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1384.670381][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1384.670384][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1384.670385][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1384.670387][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1384.670389][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1384.670391][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1384.670395][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1384.670401][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1384.670406][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1384.670410][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1384.670414][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1384.670417][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1384.670422][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1384.670424][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1384.670429][ C3] xas_alloc (lib/xarray.c:378) 
[ 1384.670434][ C3] xas_create (lib/xarray.c:685) 
[ 1384.670440][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1384.670444][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1384.670448][ C3] __xa_store (lib/xarray.c:1703) 
[ 1384.670452][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1384.670457][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1384.670459][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1384.670462][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1384.670467][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1384.670471][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1384.670474][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1384.670479][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1384.670481][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1384.670484][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1384.670488][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1384.670493][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1384.670498][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1384.670503][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1384.670508][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1384.670511][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1384.670516][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1384.670523][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1384.670526][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1384.670531][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1384.670535][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1384.670538][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1384.670542][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1384.670545][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1384.670548][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1384.670553][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1384.670557][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1384.670561][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1384.670564][    C3] RIP: 0033:0x7f439756d93b
[ 1384.670567][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1384.670570][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1384.670573][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1384.670575][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1384.670576][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1384.670578][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1384.670580][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1388.669145][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1388.669155][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1388.669159][ C2] softirqs last disabled at (0): 0x0 
| [ 1388.669173][    C2] Tainted: [L]=SOFTLOCKUP
[ 1388.669175][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1388.669178][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1388.669188][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1388.669191][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1388.669195][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1388.669197][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1388.669199][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1388.669201][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1388.669203][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1388.669205][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1388.669208][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1388.669213][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1388.669215][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1388.669226][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1388.669227][    C2] PKRU: 55555554
[ 1388.669229][    C2] Call Trace:
[ 1388.669234][    C2]  <TASK>
[ 1388.669239][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1388.669243][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1388.669250][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1388.669254][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1388.669262][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1388.669266][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1388.669269][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1388.669272][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1388.669279][ C2] xa_store (lib/xarray.c:1734) 
[ 1388.669284][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1388.669290][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1388.669295][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1388.669300][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1388.669304][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1388.669311][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1388.669314][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1388.669322][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1388.669326][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1388.669331][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1388.669339][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1388.669344][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1388.669354][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1388.669358][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1388.669365][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1388.669370][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1388.669374][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1388.669379][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1388.669382][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1388.669385][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1388.669393][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1388.669397][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1388.669403][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1388.669408][    C2] RIP: 0033:0x7f439756d93b
[ 1388.669413][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1388.669416][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1388.669419][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1388.669422][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1388.669424][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1388.669426][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1388.669427][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1412.656146][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1412.656154][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1412.656158][ C0] softirqs last disabled at (0): 0x0 
| [ 1412.656170][    C0] Tainted: [L]=SOFTLOCKUP
[ 1412.656171][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1412.656173][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:171 mm/kasan/generic.c:189) 
[ 1412.656179][ C0] Code: 00 00 e9 2f 4d 36 02 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 <48> 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	e9 2f 4d 36 02       	jmp    0x2364d36
   7:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 00 
  12:	0f 1f 40 00          	nopl   0x0(%rax)
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	66 0f 1f 00          	nopw   (%rax)
  2a:*	48 85 f6             	test   %rsi,%rsi		<-- trapping instruction
  2d:	0f 84 5e 01 00 00    	je     0x191
  33:	48 89 f8             	mov    %rdi,%rax
  36:	41 54                	push   %r12
  38:	44 0f b6 c2          	movzbl %dl,%r8d
  3c:	48 01 f0             	add    %rsi,%rax
  3f:	55                   	push   %rbp

Code starting with the faulting instruction
===========================================
   0:	48 85 f6             	test   %rsi,%rsi
   3:	0f 84 5e 01 00 00    	je     0x167
   9:	48 89 f8             	mov    %rdi,%rax
   c:	41 54                	push   %r12
   e:	44 0f b6 c2          	movzbl %dl,%r8d
  12:	48 01 f0             	add    %rsi,%rax
  15:	55                   	push   %rbp
[ 1412.656182][    C0] RSP: 0018:ffffc900034c7a10 EFLAGS: 00000246
[ 1412.656185][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1412.656187][    C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1412.656189][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1412.656191][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1412.656193][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1412.656195][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1412.656198][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1412.656201][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1412.656204][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1412.656205][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1412.656207][    C0] PKRU: 55555554
[ 1412.656208][    C0] Call Trace:
[ 1412.656213][    C0]  <TASK>
[ 1412.656215][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1412.656224][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1412.656227][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1412.656232][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1412.656236][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1412.656244][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1412.656247][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1412.656250][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1412.656253][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1412.656259][ C0] xa_store (lib/xarray.c:1734) 
[ 1412.656267][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1412.656272][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1412.656277][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1412.656280][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1412.656283][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1412.656289][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1412.656293][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1412.656299][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1412.656303][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1412.656308][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1412.656314][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1412.656319][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1412.656329][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1412.656333][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1412.656339][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1412.656344][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1412.656347][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1412.656351][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1412.656354][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1412.656358][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1412.656365][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1412.656369][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1412.656374][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1412.656379][    C0] RIP: 0033:0x7f439756d93b
[ 1412.656383][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1412.656386][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1412.656389][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1412.656391][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1412.656393][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1412.656395][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1412.656397][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1412.669133][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1412.669140][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1412.669143][ C1] softirqs last disabled at (0): 0x0 
| [ 1412.669154][    C1] Tainted: [L]=SOFTLOCKUP
[ 1412.669155][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1412.669157][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1412.669163][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1412.669166][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1412.669169][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1412.669171][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1412.669173][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1412.669175][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1412.669177][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1412.669179][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1412.669181][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1412.669185][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1412.669187][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1412.669189][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1412.669191][    C1] PKRU: 55555554
[ 1412.669192][    C1] Call Trace:
[ 1412.669195][    C1]  <TASK>
[ 1412.669198][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1412.669207][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1412.669212][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1412.669215][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1412.669221][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1412.669225][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1412.669230][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1412.669233][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1412.669239][ C1] xa_store (lib/xarray.c:1734) 
[ 1412.669243][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1412.669247][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1412.669252][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1412.669255][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1412.669258][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1412.669263][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1412.669267][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1412.669273][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1412.669277][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1412.669281][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1412.669287][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1412.669291][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1412.669298][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1412.669302][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1412.669307][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1412.669311][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1412.669314][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1412.669318][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1412.669321][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1412.669325][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1412.669330][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1412.669334][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1412.669339][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1412.669343][    C1] RIP: 0033:0x7f439756d93b
[ 1412.669347][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1412.669349][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1412.669352][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1412.669355][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1412.669356][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1412.669358][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1412.669360][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1412.670125][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1412.670130][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1412.670134][ C3] softirqs last disabled at (0): 0x0 
| [ 1412.670147][    C3] Tainted: [L]=SOFTLOCKUP
[ 1412.670149][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1412.670150][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:171 mm/kasan/generic.c:189) 
[ 1412.670154][ C3] Code: 00 00 e9 2f 4d 36 02 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 <48> 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	e9 2f 4d 36 02       	jmp    0x2364d36
   7:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 00 
  12:	0f 1f 40 00          	nopl   0x0(%rax)
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	66 0f 1f 00          	nopw   (%rax)
  2a:*	48 85 f6             	test   %rsi,%rsi		<-- trapping instruction
  2d:	0f 84 5e 01 00 00    	je     0x191
  33:	48 89 f8             	mov    %rdi,%rax
  36:	41 54                	push   %r12
  38:	44 0f b6 c2          	movzbl %dl,%r8d
  3c:	48 01 f0             	add    %rsi,%rax
  3f:	55                   	push   %rbp

Code starting with the faulting instruction
===========================================
   0:	48 85 f6             	test   %rsi,%rsi
   3:	0f 84 5e 01 00 00    	je     0x167
   9:	48 89 f8             	mov    %rdi,%rax
   c:	41 54                	push   %r12
   e:	44 0f b6 c2          	movzbl %dl,%r8d
  12:	48 01 f0             	add    %rsi,%rax
  15:	55                   	push   %rbp
[ 1412.670157][    C3] RSP: 0018:ffffc90000270a40 EFLAGS: 00000246
[ 1412.670160][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1412.670162][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1412.670164][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1412.670166][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1412.670168][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1412.670170][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1412.670173][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1412.670176][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1412.670178][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1412.670180][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1412.670181][    C3] PKRU: 55555554
[ 1412.670183][    C3] Call Trace:
[ 1412.670185][    C3]  <IRQ>
[ 1412.670186][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1412.670191][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1412.670195][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1412.670200][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1412.670206][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1412.670211][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1412.670215][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1412.670219][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1412.670222][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1412.670225][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1412.670229][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1412.670232][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1412.670234][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1412.670237][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1412.670242][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1412.670245][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1412.670248][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1412.670251][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1412.670256][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1412.670260][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1412.670266][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1412.670269][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1412.670274][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1412.670278][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1412.670282][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1412.670285][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1412.670288][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1412.670293][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1412.670296][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1412.670301][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1412.670304][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1412.670307][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1412.670312][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1412.670315][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1412.670319][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1412.670322][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1412.670325][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1412.670328][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1412.670333][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1412.670338][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1412.670341][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1412.670346][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1412.670350][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1412.670354][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1412.670358][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1412.670363][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1412.670368][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1412.670372][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1412.670375][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1412.670379][    C3]  </IRQ>
[ 1412.670380][    C3]  <TASK>
[ 1412.670382][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1412.670386][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1412.670389][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1412.670392][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1412.670395][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1412.670397][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1412.670399][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1412.670401][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1412.670403][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1412.670407][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1412.670413][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1412.670418][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1412.670422][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1412.670427][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1412.670430][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1412.670434][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1412.670436][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1412.670442][ C3] xas_alloc (lib/xarray.c:378) 
[ 1412.670446][ C3] xas_create (lib/xarray.c:685) 
[ 1412.670452][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1412.670456][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1412.670460][ C3] __xa_store (lib/xarray.c:1703) 
[ 1412.670464][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1412.670471][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1412.670474][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1412.670477][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1412.670482][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1412.670486][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1412.670489][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1412.670494][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1412.670497][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1412.670499][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1412.670504][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1412.670507][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1412.670512][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1412.670515][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1412.670520][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1412.670523][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1412.670530][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1412.670536][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1412.670540][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1412.670544][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1412.670548][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1412.670552][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1412.670555][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1412.670558][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1412.670561][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1412.670566][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1412.670570][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1412.670574][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1412.670577][    C3] RIP: 0033:0x7f439756d93b
[ 1412.670581][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1412.670583][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1412.670586][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1412.670588][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1412.670590][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1412.670592][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1412.670593][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1416.669147][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1416.669157][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1416.669161][ C2] softirqs last disabled at (0): 0x0 
| [ 1416.669175][    C2] Tainted: [L]=SOFTLOCKUP
[ 1416.669177][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1416.669202][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1416.669213][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1416.669217][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1416.669220][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1416.669223][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1416.669225][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1416.669227][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1416.669229][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1416.669231][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1416.669234][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1416.669241][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1416.669243][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1416.669245][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1416.669246][    C2] PKRU: 55555554
[ 1416.669248][    C2] Call Trace:
[ 1416.669253][    C2]  <TASK>
[ 1416.669258][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1416.669262][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1416.669268][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1416.669273][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1416.669281][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1416.669285][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1416.669288][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1416.669291][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1416.669299][ C2] xa_store (lib/xarray.c:1734) 
[ 1416.669304][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1416.669310][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1416.669316][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1416.669319][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1416.669322][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1416.669329][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1416.669333][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1416.669341][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1416.669349][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1416.669354][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1416.669362][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1416.669367][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1416.669377][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1416.669381][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1416.669389][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1416.669394][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1416.669398][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1416.669404][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1416.669407][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1416.669411][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1416.669418][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1416.669422][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1416.669433][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1416.669438][    C2] RIP: 0033:0x7f439756d93b
[ 1416.669444][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1416.669447][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1416.669451][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1416.669453][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1416.669455][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1416.669457][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1416.669459][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1438.148004][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 1438.148277][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 1438.148540][    C1] NMI backtrace for cpu 1
| [ 1438.148562][    C1] Tainted: [L]=SOFTLOCKUP
[ 1438.148564][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1438.148567][ C1] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1438.148580][ C1] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 1438.148597][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1438.148601][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1438.148604][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1438.148606][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1438.148608][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1438.148610][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1438.148613][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1438.148615][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1438.148620][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1438.148622][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1438.148624][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1438.148626][    C1] PKRU: 55555554
[ 1438.148627][    C1] Call Trace:
[ 1438.148631][    C1]  <TASK>
[ 1438.148636][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1438.148641][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1438.148647][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1438.148651][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1438.148658][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1438.148662][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1438.148665][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1438.148668][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1438.148676][ C1] xa_store (lib/xarray.c:1734) 
[ 1438.148680][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1438.148687][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1438.148692][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1438.148695][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1438.148698][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1438.148705][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1438.148708][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1438.148716][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1438.148720][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1438.148725][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1438.148732][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1438.148742][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1438.148751][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1438.148755][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1438.148763][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1438.148770][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1438.148774][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1438.148779][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1438.148783][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1438.148786][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1438.148794][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1438.148798][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1438.148805][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1438.148810][    C1] RIP: 0033:0x7f439756d93b
[ 1438.148817][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1438.148820][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1438.148824][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1438.148826][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1438.148828][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1438.148830][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1438.148832][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1438.148830][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 1438.148832][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1438.148838][    C1]  </TASK>
| [ 1438.149541][    C3] Tainted: [L]=SOFTLOCKUP
[ 1438.149543][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1438.149545][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1438.149553][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1438.149556][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1438.149560][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1438.149563][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1438.149565][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1438.149567][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1438.149569][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1438.149574][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1438.149577][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1438.149581][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1438.149583][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1438.149585][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1438.149587][    C3] PKRU: 55555554
[ 1438.149588][    C3] Call Trace:
[ 1438.149591][    C3]  <IRQ>
[ 1438.149592][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1438.149598][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1438.149602][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1438.149606][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1438.149610][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1438.149614][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1438.149620][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1438.149625][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1438.149627][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1438.149631][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1438.149634][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1438.149636][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1438.149640][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1438.149645][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1438.149649][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1438.149652][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1438.149656][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1438.149662][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1438.149666][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1438.149671][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1438.149676][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1438.149682][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1438.149688][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1438.149691][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1438.149694][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1438.149697][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1438.149701][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1438.149703][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1438.149709][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1438.149712][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1438.149715][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1438.149720][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1438.149724][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1438.149727][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1438.149730][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1438.149734][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1438.149737][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1438.149742][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1438.149747][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1438.149749][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1438.149754][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1438.149758][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1438.149762][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1438.149767][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1438.149771][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1438.149776][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1438.149779][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1438.149783][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1438.149786][    C3]  </IRQ>
[ 1438.149787][    C3]  <TASK>
[ 1438.149789][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1438.149793][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1438.149797][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1438.149800][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1438.149803][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1438.149805][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1438.149807][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1438.149809][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1438.149810][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1438.149814][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1438.149820][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1438.149825][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1438.149829][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1438.149834][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1438.149837][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1438.149841][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1438.149843][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1438.149848][ C3] xas_alloc (lib/xarray.c:378) 
[ 1438.149853][ C3] xas_create (lib/xarray.c:685) 
[ 1438.149858][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1438.149863][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1438.149866][ C3] __xa_store (lib/xarray.c:1703) 
[ 1438.149871][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1438.149875][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1438.149878][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1438.149883][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1438.149888][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1438.149892][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1438.149896][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1438.149901][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1438.149904][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1438.149907][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1438.149911][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1438.149914][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1438.149919][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1438.149923][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1438.149928][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1438.149931][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1438.149936][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1438.149943][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1438.149947][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1438.149952][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1438.149958][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1438.149961][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1438.149964][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1438.149967][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1438.149971][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1438.149977][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1438.149981][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1438.149988][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1438.149991][    C3] RIP: 0033:0x7f439756d93b
[ 1438.149996][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1438.149999][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1438.150002][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1438.150004][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1438.150006][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1438.150008][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1438.150009][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1440.656144][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1440.656155][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1440.656159][ C0] softirqs last disabled at (0): 0x0 
| [ 1440.656170][    C0] Tainted: [L]=SOFTLOCKUP
[ 1440.656171][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1440.656174][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1440.656181][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1440.656184][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1440.656187][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1440.656189][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1440.656191][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1440.656193][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1440.656195][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1440.656197][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1440.656200][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1440.656203][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1440.656205][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1440.656207][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1440.656209][    C0] PKRU: 55555554
[ 1440.656210][    C0] Call Trace:
[ 1440.656215][    C0]  <TASK>
[ 1440.656219][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1440.656223][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1440.656229][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1440.656232][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1440.656243][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1440.656252][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1440.656255][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1440.656258][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1440.656264][ C0] xa_store (lib/xarray.c:1734) 
[ 1440.656271][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1440.656277][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1440.656284][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1440.656287][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1440.656290][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1440.656296][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1440.656300][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1440.656307][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1440.656311][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1440.656316][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1440.656321][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1440.656326][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1440.656338][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1440.656342][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1440.656348][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1440.656355][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1440.656359][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1440.656363][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1440.656366][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1440.656369][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1440.656375][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1440.656380][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1440.656386][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1440.656392][    C0] RIP: 0033:0x7f439756d93b
[ 1440.656401][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1440.656403][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1440.656407][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1440.656409][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1440.656411][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1440.656413][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1440.656414][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1444.669144][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1444.669154][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1444.669158][ C2] softirqs last disabled at (0): 0x0 
| [ 1444.669172][    C2] Tainted: [L]=SOFTLOCKUP
[ 1444.669173][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1444.669176][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1444.669186][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1444.669190][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1444.669193][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1444.669196][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1444.669198][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1444.669200][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1444.669209][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1444.669211][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1444.669214][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1444.669219][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1444.669221][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1444.669223][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1444.669225][    C2] PKRU: 55555554
[ 1444.669226][    C2] Call Trace:
[ 1444.669231][    C2]  <TASK>
[ 1444.669236][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1444.669240][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1444.669246][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1444.669251][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1444.669259][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1444.669263][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1444.669266][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1444.669269][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1444.669276][ C2] xa_store (lib/xarray.c:1734) 
[ 1444.669281][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1444.669288][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1444.669293][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1444.669296][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1444.669299][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1444.669306][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1444.669310][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1444.669318][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1444.669322][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1444.669327][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1444.669335][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1444.669340][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1444.669349][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1444.669353][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1444.669359][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1444.669365][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1444.669369][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1444.669374][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1444.669377][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1444.669381][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1444.669388][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1444.669392][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1444.669398][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1444.669404][    C2] RIP: 0033:0x7f439756d93b
[ 1444.669409][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1444.669412][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1444.669416][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1444.669418][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1444.669422][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1444.669424][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1444.669426][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1464.669142][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1464.669150][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1464.669154][ C1] softirqs last disabled at (0): 0x0 
| [ 1464.669166][    C1] Tainted: [L]=SOFTLOCKUP
[ 1464.669168][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1464.669170][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1464.669178][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1464.669181][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1464.669184][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1464.669187][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1464.669188][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1464.669191][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1464.669193][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1464.669195][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1464.669197][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1464.669202][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1464.669204][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1464.669206][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1464.669208][    C1] PKRU: 55555554
[ 1464.669209][    C1] Call Trace:
[ 1464.669213][    C1]  <TASK>
[ 1464.669217][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1464.669221][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1464.669226][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1464.669230][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1464.669238][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1464.669242][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1464.669245][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1464.669248][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1464.669254][ C1] xa_store (lib/xarray.c:1734) 
[ 1464.669259][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1464.669264][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1464.669269][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1464.669273][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1464.669275][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1464.669281][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1464.669284][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1464.669292][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1464.669310][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1464.669315][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1464.669322][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1464.669328][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1464.669336][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1464.669340][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1464.669346][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1464.669351][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1464.669355][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1464.669359][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1464.669362][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1464.669366][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1464.669372][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1464.669376][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1464.669381][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1464.669385][    C1] RIP: 0033:0x7f439756d93b
[ 1464.669391][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1464.669394][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1464.669397][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1464.669399][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1464.669401][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1464.669403][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1464.669405][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1464.670129][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1464.670135][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1464.670139][ C3] softirqs last disabled at (0): 0x0 
| [ 1464.670149][    C3] Tainted: [L]=SOFTLOCKUP
[ 1464.670150][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1464.670152][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1464.670158][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1464.670161][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1464.670164][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1464.670166][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1464.670168][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1464.670170][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1464.670172][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1464.670174][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1464.670176][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1464.670180][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1464.670182][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1464.670190][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1464.670192][    C3] PKRU: 55555554
[ 1464.670193][    C3] Call Trace:
[ 1464.670197][    C3]  <IRQ>
[ 1464.670198][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1464.670206][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1464.670211][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1464.670215][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1464.670220][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1464.670224][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1464.670227][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1464.670231][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1464.670235][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1464.670238][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1464.670241][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1464.670244][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1464.670247][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1464.670252][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1464.670256][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1464.670259][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1464.670262][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1464.670268][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1464.670274][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1464.670280][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1464.670284][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1464.670289][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1464.670293][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1464.670297][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1464.670300][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1464.670303][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1464.670307][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1464.670309][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1464.670315][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1464.670318][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1464.670321][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1464.670326][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1464.670329][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1464.670333][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1464.670335][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1464.670339][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1464.670342][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1464.670346][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1464.670351][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1464.670354][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1464.670362][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1464.670366][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1464.670370][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1464.670376][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1464.670381][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1464.670387][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1464.670390][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1464.670394][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1464.670398][    C3]  </IRQ>
[ 1464.670399][    C3]  <TASK>
[ 1464.670401][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1464.670405][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1464.670408][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1464.670411][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1464.670415][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1464.670417][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1464.670419][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1464.670420][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1464.670422][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1464.670426][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1464.670432][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1464.670438][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1464.670441][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1464.670446][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1464.670449][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1464.670453][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1464.670456][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1464.670461][ C3] xas_alloc (lib/xarray.c:378) 
[ 1464.670466][ C3] xas_create (lib/xarray.c:685) 
[ 1464.670472][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1464.670477][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1464.670481][ C3] __xa_store (lib/xarray.c:1703) 
[ 1464.670485][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1464.670489][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1464.670492][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1464.670495][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1464.670500][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1464.670504][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1464.670507][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1464.670512][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1464.670515][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1464.670518][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1464.670522][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1464.670525][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1464.670530][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1464.670534][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1464.670538][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1464.670542][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1464.670547][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1464.670556][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1464.670559][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1464.670564][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1464.670569][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1464.670572][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1464.670576][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1464.670579][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1464.670582][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1464.670588][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1464.670592][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1464.670597][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1464.670600][    C3] RIP: 0033:0x7f439756d93b
[ 1464.670603][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1464.670606][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1464.670609][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1464.670611][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1464.670613][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1464.670615][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1464.670617][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1468.656148][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1468.656159][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1468.656163][ C0] softirqs last disabled at (0): 0x0 
| [ 1468.656178][    C0] Tainted: [L]=SOFTLOCKUP
[ 1468.656179][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1468.656182][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1468.656193][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1468.656196][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1468.656199][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1468.656202][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1468.656220][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1468.656222][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1468.656224][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1468.656226][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1468.656229][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1468.656234][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1468.656236][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1468.656238][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1468.656240][    C0] PKRU: 55555554
[ 1468.656241][    C0] Call Trace:
[ 1468.656247][    C0]  <TASK>
[ 1468.656252][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1468.656260][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1468.656266][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1468.656271][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1468.656279][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1468.656283][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1468.656286][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1468.656290][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1468.656297][ C0] xa_store (lib/xarray.c:1734) 
[ 1468.656302][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1468.656309][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1468.656315][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1468.656318][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1468.656321][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1468.656329][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1468.656332][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1468.656340][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1468.656344][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1468.656350][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1468.656358][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1468.656364][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1468.656373][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1468.656377][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1468.656384][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1468.656390][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1468.656393][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1468.656398][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1468.656402][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1468.656406][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1468.656413][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1468.656418][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1468.656424][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1468.656429][    C0] RIP: 0033:0x7f439756d93b
[ 1468.656435][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1468.656438][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1468.656442][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1468.656444][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1468.656446][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1468.656448][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1468.656450][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1472.669143][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1472.669153][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1472.669167][ C2] softirqs last disabled at (0): 0x0 
| [ 1472.669182][    C2] Tainted: [L]=SOFTLOCKUP
[ 1472.669184][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1472.669187][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1472.669197][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1472.669201][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1472.669204][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1472.669207][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1472.669209][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1472.669211][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1472.669213][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1472.669215][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1472.669218][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1472.669222][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1472.669224][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1472.669226][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1472.669227][    C2] PKRU: 55555554
[ 1472.669229][    C2] Call Trace:
[ 1472.669233][    C2]  <TASK>
[ 1472.669238][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1472.669242][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1472.669248][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1472.669252][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1472.669260][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1472.669265][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1472.669268][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1472.669271][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1472.669278][ C2] xa_store (lib/xarray.c:1734) 
[ 1472.669283][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1472.669289][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1472.669295][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1472.669297][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1472.669301][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1472.669308][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1472.669311][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1472.669319][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1472.669323][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1472.669328][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1472.669335][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1472.669340][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1472.669350][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1472.669354][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1472.669360][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1472.669365][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1472.669369][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1472.669374][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1472.669381][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1472.669384][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1472.669391][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1472.669396][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1472.669402][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1472.669407][    C2] RIP: 0033:0x7f439756d93b
[ 1472.669412][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1472.669415][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1472.669418][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1472.669420][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1472.669422][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1472.669424][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1472.669426][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1492.669145][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1492.669155][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1492.669158][ C1] softirqs last disabled at (0): 0x0 
| [ 1492.669172][    C1] Tainted: [L]=SOFTLOCKUP
[ 1492.669174][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1492.669177][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1492.669187][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1492.669190][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1492.669194][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1492.669196][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1492.669198][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1492.669200][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1492.669203][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1492.669205][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1492.669208][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1492.669212][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1492.669214][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1492.669216][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1492.669218][    C1] PKRU: 55555554
[ 1492.669219][    C1] Call Trace:
[ 1492.669224][    C1]  <TASK>
[ 1492.669229][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1492.669234][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1492.669240][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1492.669244][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1492.669253][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1492.669257][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1492.669269][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1492.669273][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1492.669280][ C1] xa_store (lib/xarray.c:1734) 
[ 1492.669285][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1492.669292][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1492.669297][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1492.669301][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1492.669304][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1492.669311][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1492.669314][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1492.669322][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1492.669326][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1492.669332][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1492.669339][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1492.669344][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1492.669354][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1492.669358][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1492.669365][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1492.669370][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1492.669374][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1492.669382][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1492.669385][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1492.669388][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1492.669396][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1492.669400][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1492.669406][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1492.669412][    C1] RIP: 0033:0x7f439756d93b
[ 1492.669418][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1492.669421][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1492.669425][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1492.669427][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1492.669429][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1492.669431][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1492.669433][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1492.670137][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1492.670145][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1492.670149][ C3] softirqs last disabled at (0): 0x0 
| [ 1492.670161][    C3] Tainted: [L]=SOFTLOCKUP
[ 1492.670163][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1492.670165][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1492.670173][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1492.670184][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1492.670187][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1492.670190][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1492.670191][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1492.670193][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1492.670195][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1492.670198][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1492.670200][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1492.670204][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1492.670206][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1492.670207][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1492.670209][    C3] PKRU: 55555554
[ 1492.670210][    C3] Call Trace:
[ 1492.670215][    C3]  <IRQ>
[ 1492.670217][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1492.670222][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1492.670227][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1492.670231][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1492.670236][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1492.670240][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1492.670243][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1492.670248][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1492.670251][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1492.670254][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1492.670257][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1492.670260][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1492.670263][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1492.670268][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1492.670273][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1492.670276][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1492.670280][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1492.670285][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1492.670289][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1492.670295][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1492.670300][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1492.670306][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1492.670311][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1492.670315][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1492.670318][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1492.670321][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1492.670325][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1492.670327][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1492.670333][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1492.670336][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1492.670339][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1492.670343][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1492.670348][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1492.670354][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1492.670357][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1492.670360][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1492.670364][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1492.670368][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1492.670373][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1492.670376][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1492.670381][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1492.670385][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1492.670389][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1492.670394][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1492.670398][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1492.670404][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1492.670407][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1492.670411][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1492.670415][    C3]  </IRQ>
[ 1492.670416][    C3]  <TASK>
[ 1492.670418][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1492.670423][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1492.670426][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1492.670429][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1492.670431][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1492.670433][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1492.670436][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1492.670437][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1492.670439][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1492.670443][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1492.670449][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1492.670454][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1492.670458][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1492.670463][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1492.670466][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1492.670470][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1492.670473][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1492.670478][ C3] xas_alloc (lib/xarray.c:378) 
[ 1492.670483][ C3] xas_create (lib/xarray.c:685) 
[ 1492.670489][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1492.670494][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1492.670497][ C3] __xa_store (lib/xarray.c:1703) 
[ 1492.670501][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1492.670506][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1492.670509][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1492.670512][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1492.670516][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1492.670521][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1492.670524][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1492.670531][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1492.670534][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1492.670537][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1492.670541][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1492.670544][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1492.670549][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1492.670553][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1492.670558][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1492.670562][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1492.670566][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1492.670575][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1492.670579][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1492.670585][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1492.670589][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1492.670593][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1492.670597][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1492.670599][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1492.670603][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1492.670609][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1492.670613][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1492.670618][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1492.670622][    C3] RIP: 0033:0x7f439756d93b
[ 1492.670625][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1492.670628][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1492.670631][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1492.670634][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1492.670636][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1492.670638][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1492.670639][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1496.656141][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1496.656151][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1496.656155][ C0] softirqs last disabled at (0): 0x0 
| [ 1496.656170][    C0] Tainted: [L]=SOFTLOCKUP
[ 1496.656171][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1496.656174][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1496.656185][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1496.656189][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1496.656192][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1496.656194][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1496.656197][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1496.656199][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1496.656212][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1496.656215][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1496.656218][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1496.656224][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1496.656226][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1496.656228][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1496.656230][    C0] PKRU: 55555554
[ 1496.656231][    C0] Call Trace:
[ 1496.656236][    C0]  <TASK>
[ 1496.656240][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1496.656245][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1496.656251][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1496.656255][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1496.656264][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1496.656268][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1496.656271][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1496.656274][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1496.656281][ C0] xa_store (lib/xarray.c:1734) 
[ 1496.656286][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1496.656292][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1496.656297][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1496.656300][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1496.656303][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1496.656310][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1496.656314][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1496.656322][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1496.656326][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1496.656331][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1496.656339][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1496.656343][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1496.656353][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1496.656356][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1496.656363][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1496.656369][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1496.656372][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1496.656377][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1496.656381][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1496.656384][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1496.656392][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1496.656396][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1496.656402][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1496.656407][    C0] RIP: 0033:0x7f439756d93b
[ 1496.656413][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1496.656416][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1496.656419][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1496.656422][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1496.656426][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1496.656428][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1496.656430][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1500.669141][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1500.669151][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1500.669154][ C2] softirqs last disabled at (0): 0x0 
| [ 1500.669169][    C2] Tainted: [L]=SOFTLOCKUP
[ 1500.669171][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1500.669174][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1500.669184][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1500.669187][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1500.669191][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1500.669193][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1500.669195][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1500.669198][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1500.669200][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1500.669202][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1500.669204][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1500.669208][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1500.669210][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1500.669212][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1500.669213][    C2] PKRU: 55555554
[ 1500.669215][    C2] Call Trace:
[ 1500.669220][    C2]  <TASK>
[ 1500.669225][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1500.669229][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1500.669235][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1500.669239][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1500.669247][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1500.669251][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1500.669254][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1500.669257][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1500.669264][ C2] xa_store (lib/xarray.c:1734) 
[ 1500.669269][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1500.669275][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1500.669280][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1500.669283][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1500.669286][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1500.669294][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1500.669297][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1500.669305][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1500.669316][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1500.669321][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1500.669329][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1500.669334][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1500.669343][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1500.669348][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1500.669355][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1500.669360][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1500.669364][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1500.669369][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1500.669372][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1500.669376][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1500.669383][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1500.669387][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1500.669393][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1500.669399][    C2] RIP: 0033:0x7f439756d93b
[ 1500.669404][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1500.669407][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1500.669410][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1500.669412][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1500.669414][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1500.669416][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1500.669418][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1516.161785][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 1516.162086][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 1516.162360][    C1] NMI backtrace for cpu 1
| [ 1516.162380][    C1] Tainted: [L]=SOFTLOCKUP
[ 1516.162382][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1516.162385][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1516.162398][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1516.162401][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1516.162412][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1516.162414][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1516.162416][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1516.162418][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1516.162421][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1516.162424][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1516.162426][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1516.162432][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1516.162434][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1516.162436][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1516.162437][    C1] PKRU: 55555554
[ 1516.162439][    C1] Call Trace:
[ 1516.162443][    C1]  <TASK>
[ 1516.162448][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1516.162453][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1516.162459][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1516.162463][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1516.162471][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1516.162475][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1516.162480][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1516.162483][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1516.162490][ C1] xa_store (lib/xarray.c:1734) 
[ 1516.162495][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1516.162501][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1516.162506][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1516.162509][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1516.162512][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1516.162519][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1516.162523][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1516.162531][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1516.162535][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1516.162539][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1516.162548][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1516.162552][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1516.162563][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1516.162567][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1516.162574][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1516.162581][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1516.162585][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1516.162590][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1516.162593][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1516.162597][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1516.162604][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1516.162608][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1516.162614][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1516.162619][    C1] RIP: 0033:0x7f439756d93b
[ 1516.162625][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1516.162628][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1516.162631][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1516.162633][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1516.162635][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1516.162637][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1516.162639][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1516.162637][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 1516.162639][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1516.162645][    C1]  </TASK>
| [ 1516.163350][    C3] Tainted: [L]=SOFTLOCKUP
[ 1516.163352][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1516.163354][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:177 mm/kasan/generic.c:189) 
[ 1516.163360][ C3] Code: ff ff ff ff ff ff fe 48 39 c7 77 23 44 89 c2 e8 b7 e7 ff ff 83 f0 01 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff <48> 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	ff                   	(bad)
   3:	ff                   	(bad)
   4:	ff                   	(bad)
   5:	ff                   	(bad)
   6:	fe 48 39             	decb   0x39(%rax)
   9:	c7                   	(bad)
   a:	77 23                	ja     0x2f
   c:	44 89 c2             	mov    %r8d,%edx
   f:	e8 b7 e7 ff ff       	call   0xffffffffffffe7cb
  14:	83 f0 01             	xor    $0x1,%eax
  17:	5b                   	pop    %rbx
  18:	5d                   	pop    %rbp
  19:	41 5c                	pop    %r12
  1b:	c3                   	ret
  1c:	cc                   	int3
  1d:	cc                   	int3
  1e:	cc                   	int3
  1f:	cc                   	int3
  20:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  27:	7f ff ff 
  2a:*	48 39 c7             	cmp    %rax,%rdi		<-- trapping instruction
  2d:	76 dd                	jbe    0xc
  2f:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  34:	48 89 fd             	mov    %rdi,%rbp
  37:	48                   	rex.W
  38:	b8 00 00 00 00       	mov    $0x0,%eax
  3d:	00 fc                	add    %bh,%ah
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	48 39 c7             	cmp    %rax,%rdi
   3:	76 dd                	jbe    0xffffffffffffffe2
   5:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   a:	48 89 fd             	mov    %rdi,%rbp
   d:	48                   	rex.W
   e:	b8 00 00 00 00       	mov    $0x0,%eax
  13:	00 fc                	add    %bh,%ah
  15:	ff                   	.byte 0xff
[ 1516.163364][    C3] RSP: 0018:ffffc90000270a28 EFLAGS: 00000282
[ 1516.163368][    C3] RAX: ffff7fffffffffff RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1516.163370][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1516.163372][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1516.163375][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1516.163376][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1516.163381][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1516.163384][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1516.163388][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1516.163390][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1516.163392][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1516.163394][    C3] PKRU: 55555554
[ 1516.163395][    C3] Call Trace:
[ 1516.163397][    C3]  <IRQ>
[ 1516.163400][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1516.163405][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1516.163409][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1516.163414][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1516.163417][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1516.163420][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1516.163425][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1516.163428][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1516.163432][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1516.163435][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1516.163439][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1516.163441][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1516.163444][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1516.163447][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1516.163452][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1516.163455][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1516.163459][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1516.163462][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1516.163467][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1516.163471][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1516.163476][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1516.163480][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1516.163486][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1516.163491][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1516.163494][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1516.163497][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1516.163501][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1516.163505][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1516.163507][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1516.163514][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1516.163517][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1516.163520][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1516.163525][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1516.163530][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1516.163536][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1516.163539][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1516.163545][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1516.163549][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1516.163553][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1516.163560][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1516.163563][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1516.163568][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1516.163572][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1516.163576][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1516.163581][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1516.163586][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1516.163591][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1516.163595][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1516.163598][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1516.163602][    C3]  </IRQ>
[ 1516.163603][    C3]  <TASK>
[ 1516.163604][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1516.163609][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1516.163612][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1516.163615][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1516.163618][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1516.163620][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1516.163621][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1516.163623][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1516.163625][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1516.163629][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1516.163635][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1516.163640][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1516.163644][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1516.163648][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1516.163651][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1516.163656][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1516.163658][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1516.163663][ C3] xas_alloc (lib/xarray.c:378) 
[ 1516.163668][ C3] xas_create (lib/xarray.c:685) 
[ 1516.163674][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1516.163678][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1516.163682][ C3] __xa_store (lib/xarray.c:1703) 
[ 1516.163686][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1516.163691][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1516.163694][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1516.163697][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1516.163702][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1516.163706][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1516.163709][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1516.163714][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1516.163717][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1516.163720][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1516.163724][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1516.163727][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1516.163734][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1516.163738][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1516.163743][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1516.163747][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1516.163751][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1516.163759][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1516.163763][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1516.163768][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1516.163773][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1516.163776][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1516.163780][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1516.163783][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1516.163786][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1516.163792][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1516.163796][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1516.163801][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1516.163805][    C3] RIP: 0033:0x7f439756d93b
[ 1516.163809][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1516.163812][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1516.163815][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1516.163819][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1516.163820][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1516.163822][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1516.163824][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1524.656136][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1524.656144][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1524.656147][ C0] softirqs last disabled at (0): 0x0 
| [ 1524.656159][    C0] Tainted: [L]=SOFTLOCKUP
[ 1524.656161][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1524.656163][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1524.656170][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1524.656174][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1524.656177][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1524.656179][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1524.656181][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1524.656183][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1524.656185][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1524.656187][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1524.656190][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1524.656193][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1524.656195][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1524.656207][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1524.656208][    C0] PKRU: 55555554
[ 1524.656210][    C0] Call Trace:
[ 1524.656214][    C0]  <TASK>
[ 1524.656218][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1524.656222][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1524.656227][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1524.656232][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1524.656239][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1524.656243][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1524.656246][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1524.656249][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1524.656255][ C0] xa_store (lib/xarray.c:1734) 
[ 1524.656259][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1524.656264][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1524.656270][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1524.656273][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1524.656275][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1524.656282][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1524.656285][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1524.656291][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1524.656296][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1524.656300][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1524.656306][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1524.656310][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1524.656318][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1524.656322][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1524.656327][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1524.656332][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1524.656336][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1524.656340][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1524.656343][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1524.656346][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1524.656353][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1524.656357][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1524.656362][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1524.656366][    C0] RIP: 0033:0x7f439756d93b
[ 1524.656371][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1524.656374][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1524.656377][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1524.656379][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1524.656381][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1524.656383][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1524.656384][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1528.669151][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1528.669161][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1528.669165][ C2] softirqs last disabled at (0): 0x0 
| [ 1528.669179][    C2] Tainted: [L]=SOFTLOCKUP
[ 1528.669181][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1528.669184][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1528.669195][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1528.669199][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1528.669202][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1528.669205][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1528.669207][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1528.669209][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1528.669211][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1528.669213][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1528.669216][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1528.669220][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1528.669222][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1528.669223][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1528.669225][    C2] PKRU: 55555554
[ 1528.669226][    C2] Call Trace:
[ 1528.669232][    C2]  <TASK>
[ 1528.669237][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1528.669241][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1528.669247][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1528.669251][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1528.669259][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1528.669264][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1528.669267][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1528.669270][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1528.669277][ C2] xa_store (lib/xarray.c:1734) 
[ 1528.669282][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1528.669289][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1528.669295][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1528.669297][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1528.669300][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1528.669307][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1528.669311][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1528.669319][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1528.669323][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1528.669328][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1528.669336][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1528.669341][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1528.669350][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1528.669357][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1528.669363][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1528.669369][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1528.669372][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1528.669377][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1528.669381][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1528.669384][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1528.669391][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1528.669396][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1528.669402][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1528.669407][    C2] RIP: 0033:0x7f439756d93b
[ 1528.669413][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1528.669416][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1528.669420][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1528.669422][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1528.669424][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1528.669426][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1528.669428][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1540.669139][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1540.669148][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1540.669151][ C1] softirqs last disabled at (0): 0x0 
| [ 1540.669163][    C1] Tainted: [L]=SOFTLOCKUP
[ 1540.669164][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1540.669167][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:171 mm/kasan/generic.c:189) 
[ 1540.669172][ C1] Code: 00 00 e9 2f 4d 36 02 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 <48> 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	e9 2f 4d 36 02       	jmp    0x2364d36
   7:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 00 
  12:	0f 1f 40 00          	nopl   0x0(%rax)
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	66 0f 1f 00          	nopw   (%rax)
  2a:*	48 85 f6             	test   %rsi,%rsi		<-- trapping instruction
  2d:	0f 84 5e 01 00 00    	je     0x191
  33:	48 89 f8             	mov    %rdi,%rax
  36:	41 54                	push   %r12
  38:	44 0f b6 c2          	movzbl %dl,%r8d
  3c:	48 01 f0             	add    %rsi,%rax
  3f:	55                   	push   %rbp

Code starting with the faulting instruction
===========================================
   0:	48 85 f6             	test   %rsi,%rsi
   3:	0f 84 5e 01 00 00    	je     0x167
   9:	48 89 f8             	mov    %rdi,%rax
   c:	41 54                	push   %r12
   e:	44 0f b6 c2          	movzbl %dl,%r8d
  12:	48 01 f0             	add    %rsi,%rax
  15:	55                   	push   %rbp
[ 1540.669176][    C1] RSP: 0018:ffffc900034b7a10 EFLAGS: 00000246
[ 1540.669179][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1540.669181][    C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1540.669183][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1540.669185][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1540.669187][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1540.669189][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1540.669192][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1540.669196][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1540.669198][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1540.669200][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1540.669202][    C1] PKRU: 55555554
[ 1540.669203][    C1] Call Trace:
[ 1540.669207][    C1]  <TASK>
[ 1540.669209][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1540.669219][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1540.669223][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1540.669228][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1540.669232][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1540.669245][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1540.669249][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1540.669251][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1540.669255][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1540.669261][ C1] xa_store (lib/xarray.c:1734) 
[ 1540.669266][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1540.669271][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1540.669276][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1540.669279][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1540.669282][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1540.669288][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1540.669292][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1540.669299][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1540.669302][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1540.669307][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1540.669313][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1540.669318][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1540.669326][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1540.669330][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1540.669335][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1540.669341][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1540.669344][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1540.669348][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1540.669351][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1540.669355][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1540.669361][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1540.669365][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1540.669370][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1540.669374][    C1] RIP: 0033:0x7f439756d93b
[ 1540.669380][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1540.669382][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1540.669386][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1540.669388][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1540.669390][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1540.669391][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1540.669393][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1540.670128][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1540.670134][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1540.670138][ C3] softirqs last disabled at (0): 0x0 
| [ 1540.670148][    C3] Tainted: [L]=SOFTLOCKUP
[ 1540.670150][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1540.670152][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1540.670158][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1540.670161][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1540.670164][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1540.670166][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1540.670168][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1540.670170][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1540.670172][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1540.670174][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1540.670176][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1540.670180][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1540.670182][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1540.670184][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1540.670185][    C3] PKRU: 55555554
[ 1540.670187][    C3] Call Trace:
[ 1540.670190][    C3]  <IRQ>
[ 1540.670192][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1540.670197][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1540.670202][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1540.670206][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1540.670210][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1540.670215][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1540.670218][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1540.670222][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1540.670225][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1540.670229][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1540.670231][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1540.670234][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1540.670237][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1540.670242][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1540.670246][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1540.670249][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1540.670253][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1540.670258][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1540.670262][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1540.670268][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1540.670272][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1540.670277][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1540.670282][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1540.670285][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1540.670288][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1540.670292][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1540.670295][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1540.670298][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1540.670304][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1540.670307][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1540.670310][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1540.670315][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1540.670318][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1540.670322][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1540.670325][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1540.670329][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1540.670332][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1540.670336][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1540.670341][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1540.670344][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1540.670349][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1540.670353][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1540.670356][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1540.670361][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1540.670366][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1540.670371][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1540.670375][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1540.670378][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1540.670382][    C3]  </IRQ>
[ 1540.670383][    C3]  <TASK>
[ 1540.670385][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1540.670389][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1540.670392][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1540.670395][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1540.670398][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1540.670401][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1540.670403][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1540.670405][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1540.670407][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1540.670411][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1540.670417][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1540.670423][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1540.670427][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1540.670431][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1540.670434][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1540.670438][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1540.670441][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1540.670446][ C3] xas_alloc (lib/xarray.c:378) 
[ 1540.670450][ C3] xas_create (lib/xarray.c:685) 
[ 1540.670456][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1540.670461][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1540.670464][ C3] __xa_store (lib/xarray.c:1703) 
[ 1540.670468][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1540.670473][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1540.670476][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1540.670479][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1540.670484][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1540.670488][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1540.670492][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1540.670497][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1540.670500][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1540.670502][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1540.670506][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1540.670510][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1540.670515][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1540.670519][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1540.670523][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1540.670527][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1540.670531][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1540.670539][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1540.670542][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1540.670547][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1540.670551][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1540.670555][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1540.670558][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1540.670561][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1540.670564][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1540.670570][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1540.670574][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1540.670578][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1540.670581][    C3] RIP: 0033:0x7f439756d93b
[ 1540.670585][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1540.670588][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1540.670591][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1540.670593][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1540.670595][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1540.670597][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1540.670599][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1552.656138][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1552.656147][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1552.656151][ C0] softirqs last disabled at (0): 0x0 
| [ 1552.656163][    C0] Tainted: [L]=SOFTLOCKUP
[ 1552.656164][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1552.656167][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1552.656176][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1552.656179][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1552.656182][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1552.656184][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1552.656186][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1552.656189][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1552.656191][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1552.656193][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1552.656195][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1552.656199][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1552.656201][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1552.656203][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1552.656204][    C0] PKRU: 55555554
[ 1552.656206][    C0] Call Trace:
[ 1552.656210][    C0]  <TASK>
[ 1552.656214][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1552.656218][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1552.656223][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1552.656227][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1552.656234][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1552.656238][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1552.656241][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1552.656244][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1552.656251][ C0] xa_store (lib/xarray.c:1734) 
[ 1552.656255][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1552.656261][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1552.656266][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1552.656269][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1552.656272][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1552.656279][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1552.656282][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1552.656289][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1552.656293][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1552.656298][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1552.656305][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1552.656309][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1552.656318][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1552.656321][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1552.656327][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1552.656332][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1552.656336][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1552.656341][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1552.656344][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1552.656347][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1552.656354][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1552.656358][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1552.656363][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1552.656368][    C0] RIP: 0033:0x7f439756d93b
[ 1552.656373][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1552.656376][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1552.656379][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1552.656381][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1552.656384][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1552.656385][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1552.656387][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1556.669136][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1556.669144][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1556.669147][ C2] softirqs last disabled at (0): 0x0 
| [ 1556.669159][    C2] Tainted: [L]=SOFTLOCKUP
[ 1556.669161][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1556.669164][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1556.669171][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1556.669175][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1556.669177][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1556.669180][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1556.669182][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1556.669184][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1556.669186][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1556.669188][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1556.669190][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1556.669195][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1556.669197][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1556.669199][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1556.669200][    C2] PKRU: 55555554
[ 1556.669202][    C2] Call Trace:
[ 1556.669206][    C2]  <TASK>
[ 1556.669210][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1556.669214][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1556.669219][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1556.669223][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1556.669229][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1556.669233][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1556.669236][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1556.669239][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1556.669245][ C2] xa_store (lib/xarray.c:1734) 
[ 1556.669250][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1556.669255][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1556.669260][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1556.669263][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1556.669266][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1556.669272][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1556.669275][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1556.669282][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1556.669286][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1556.669291][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1556.669297][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1556.669302][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1556.669310][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1556.669313][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1556.669319][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1556.669324][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1556.669328][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1556.669332][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1556.669335][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1556.669339][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1556.669345][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1556.669349][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1556.669354][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1556.669359][    C2] RIP: 0033:0x7f439756d93b
[ 1556.669364][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1556.669367][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1556.669370][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1556.669372][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1556.669374][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1556.669376][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1556.669378][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1568.669137][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1568.669144][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1568.669148][ C1] softirqs last disabled at (0): 0x0 
| [ 1568.669160][    C1] Tainted: [L]=SOFTLOCKUP
[ 1568.669162][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1568.669164][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1568.669172][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1568.669175][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1568.669178][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1568.669181][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1568.669183][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1568.669185][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1568.669187][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1568.669189][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1568.669192][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1568.669196][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1568.669198][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1568.669200][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1568.669202][    C1] PKRU: 55555554
[ 1568.669203][    C1] Call Trace:
[ 1568.669207][    C1]  <TASK>
[ 1568.669211][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1568.669215][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1568.669220][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1568.669224][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1568.669231][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1568.669235][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1568.669238][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1568.669241][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1568.669247][ C1] xa_store (lib/xarray.c:1734) 
[ 1568.669252][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1568.669257][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1568.669262][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1568.669265][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1568.669268][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1568.669274][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1568.669277][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1568.669284][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1568.669288][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1568.669293][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1568.669299][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1568.669304][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1568.669312][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1568.669316][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1568.669321][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1568.669326][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1568.669330][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1568.669334][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1568.669337][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1568.669341][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1568.669347][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1568.669351][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1568.669357][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1568.669361][    C1] RIP: 0033:0x7f439756d93b
[ 1568.669365][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1568.669368][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1568.669371][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1568.669373][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1568.669375][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1568.669377][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1568.669378][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1568.670125][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1568.670131][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1568.670135][ C3] softirqs last disabled at (0): 0x0 
| [ 1568.670145][    C3] Tainted: [L]=SOFTLOCKUP
[ 1568.670147][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1568.670149][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1568.670155][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1568.670158][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1568.670160][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1568.670163][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1568.670165][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1568.670167][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1568.670169][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1568.670171][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1568.670173][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1568.670177][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1568.670179][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1568.670181][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1568.670182][    C3] PKRU: 55555554
[ 1568.670183][    C3] Call Trace:
[ 1568.670186][    C3]  <IRQ>
[ 1568.670188][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1568.670193][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1568.670198][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1568.670201][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1568.670206][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1568.670210][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1568.670213][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1568.670217][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1568.670221][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1568.670224][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1568.670227][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1568.670229][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1568.670232][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1568.670237][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1568.670241][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1568.670244][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1568.670247][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1568.670253][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1568.670257][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1568.670263][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1568.670267][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1568.670273][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1568.670277][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1568.670280][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1568.670284][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1568.670287][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1568.670290][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1568.670293][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1568.670298][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1568.670301][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1568.670304][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1568.670309][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1568.670312][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1568.670316][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1568.670319][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1568.670322][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1568.670326][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1568.670330][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1568.670335][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1568.670338][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1568.670344][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1568.670348][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1568.670351][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1568.670356][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1568.670361][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1568.670367][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1568.670371][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1568.670374][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1568.670377][    C3]  </IRQ>
[ 1568.670378][    C3]  <TASK>
[ 1568.670380][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1568.670384][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1568.670387][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1568.670390][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1568.670393][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1568.670395][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1568.670397][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1568.670399][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1568.670400][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1568.670405][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1568.670410][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1568.670416][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1568.670420][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1568.670424][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1568.670427][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1568.670431][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1568.670434][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1568.670439][ C3] xas_alloc (lib/xarray.c:378) 
[ 1568.670444][ C3] xas_create (lib/xarray.c:685) 
[ 1568.670450][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1568.670454][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1568.670458][ C3] __xa_store (lib/xarray.c:1703) 
[ 1568.670462][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1568.670467][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1568.670469][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1568.670472][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1568.670477][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1568.670481][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1568.670484][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1568.670489][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1568.670492][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1568.670495][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1568.670499][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1568.670502][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1568.670507][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1568.670511][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1568.670516][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1568.670519][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1568.670524][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1568.670531][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1568.670535][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1568.670539][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1568.670544][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1568.670548][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1568.670551][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1568.670554][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1568.670558][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1568.670564][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1568.670567][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1568.670573][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1568.670576][    C3] RIP: 0033:0x7f439756d93b
[ 1568.670580][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1568.670582][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1568.670586][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1568.670588][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1568.670590][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1568.670592][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1568.670594][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1580.656136][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1580.656144][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1580.656148][ C0] softirqs last disabled at (0): 0x0 
| [ 1580.656159][    C0] Tainted: [L]=SOFTLOCKUP
[ 1580.656161][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1580.656164][ C0] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1580.656171][ C0] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 1580.656175][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1580.656178][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1580.656180][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1580.656182][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1580.656184][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1580.656187][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1580.656189][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1580.656191][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1580.656196][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1580.656198][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1580.656199][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1580.656201][    C0] PKRU: 55555554
[ 1580.656202][    C0] Call Trace:
[ 1580.656206][    C0]  <TASK>
[ 1580.656210][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1580.656214][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1580.656219][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1580.656223][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1580.656230][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1580.656234][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1580.656236][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1580.656240][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1580.656246][ C0] xa_store (lib/xarray.c:1734) 
[ 1580.656250][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1580.656256][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1580.656261][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1580.656264][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1580.656267][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1580.656272][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1580.656276][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1580.656283][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1580.656287][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1580.656291][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1580.656298][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1580.656302][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1580.656311][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1580.656315][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1580.656321][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1580.656326][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1580.656329][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1580.656333][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1580.656337][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1580.656341][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1580.656347][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1580.656351][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1580.656356][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1580.656360][    C0] RIP: 0033:0x7f439756d93b
[ 1580.656366][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1580.656368][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1580.656372][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1580.656374][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1580.656375][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1580.656377][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1580.656379][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1584.669145][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1584.669154][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1584.669158][ C2] softirqs last disabled at (0): 0x0 
| [ 1584.669173][    C2] Tainted: [L]=SOFTLOCKUP
[ 1584.669175][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1584.669178][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1584.669189][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1584.669192][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1584.669195][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1584.669198][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1584.669200][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1584.669202][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1584.669204][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1584.669206][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1584.669209][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1584.669214][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1584.669216][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1584.669218][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1584.669220][    C2] PKRU: 55555554
[ 1584.669221][    C2] Call Trace:
[ 1584.669227][    C2]  <TASK>
[ 1584.669232][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1584.669237][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1584.669243][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1584.669247][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1584.669256][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1584.669260][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1584.669263][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1584.669266][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1584.669273][ C2] xa_store (lib/xarray.c:1734) 
[ 1584.669279][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1584.669286][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1584.669291][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1584.669294][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1584.669298][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1584.669305][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1584.669308][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1584.669316][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1584.669320][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1584.669326][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1584.669333][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1584.669338][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1584.669348][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1584.669352][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1584.669359][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1584.669364][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1584.669368][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1584.669373][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1584.669376][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1584.669380][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1584.669387][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1584.669392][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1584.669397][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1584.669402][    C2] RIP: 0033:0x7f439756d93b
[ 1584.669409][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1584.669411][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1584.669415][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1584.669417][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1584.669420][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1584.669421][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1584.669423][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1594.174709][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 1594.175005][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 1594.175270][    C1] NMI backtrace for cpu 1
| [ 1594.175285][    C1] Tainted: [L]=SOFTLOCKUP
[ 1594.175292][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1594.175295][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1594.175303][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1594.175306][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1594.175310][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1594.175312][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1594.175314][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1594.175317][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1594.175319][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1594.175321][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1594.175323][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1594.175328][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1594.175330][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1594.175332][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1594.175334][    C1] PKRU: 55555554
[ 1594.175335][    C1] Call Trace:
[ 1594.175338][    C1]  <TASK>
[ 1594.175341][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1594.175345][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1594.175350][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1594.175353][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1594.175361][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1594.175365][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1594.175368][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1594.175371][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1594.175377][ C1] xa_store (lib/xarray.c:1734) 
[ 1594.175381][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1594.175387][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1594.175391][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1594.175394][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1594.175397][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1594.175402][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1594.175406][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1594.175412][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1594.175416][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1594.175423][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1594.175428][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1594.175433][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1594.175441][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1594.175444][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1594.175450][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1594.175456][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1594.175459][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1594.175463][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1594.175466][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1594.175470][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1594.175476][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1594.175480][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1594.175486][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1594.175490][    C1] RIP: 0033:0x7f439756d93b
[ 1594.175496][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1594.175499][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1594.175502][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1594.175504][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1594.175506][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1594.175508][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1594.175510][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1594.175508][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 1594.175510][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1594.175515][    C1]  </TASK>
| [ 1594.176270][    C3] Tainted: [L]=SOFTLOCKUP
[ 1594.176272][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1594.176274][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1594.176279][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1594.176282][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1594.176285][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1594.176290][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1594.176292][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1594.176294][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1594.176296][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1594.176298][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1594.176301][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1594.176304][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1594.176306][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1594.176308][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1594.176310][    C3] PKRU: 55555554
[ 1594.176311][    C3] Call Trace:
[ 1594.176312][    C3]  <IRQ>
[ 1594.176314][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1594.176319][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1594.176323][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1594.176326][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1594.176330][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1594.176335][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1594.176338][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1594.176342][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1594.176345][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1594.176348][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1594.176350][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1594.176353][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1594.176356][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1594.176361][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1594.176364][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1594.176367][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1594.176370][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1594.176376][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1594.176379][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1594.176385][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1594.176388][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1594.176394][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1594.176398][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1594.176401][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1594.176404][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1594.176407][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1594.176411][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1594.176414][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1594.176419][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1594.176423][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1594.176426][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1594.176430][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1594.176433][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1594.176437][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1594.176439][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1594.176443][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1594.176446][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1594.176451][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1594.176455][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1594.176458][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1594.176463][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1594.176467][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1594.176470][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1594.176474][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1594.176478][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1594.176484][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1594.176488][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1594.176491][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1594.176495][    C3]  </IRQ>
[ 1594.176496][    C3]  <TASK>
[ 1594.176497][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1594.176501][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1594.176504][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1594.176507][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1594.176509][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1594.176511][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1594.176513][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1594.176515][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1594.176517][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1594.176521][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1594.176527][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1594.176532][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1594.176535][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1594.176540][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1594.176543][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1594.176547][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1594.176550][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1594.176554][ C3] xas_alloc (lib/xarray.c:378) 
[ 1594.176561][ C3] xas_create (lib/xarray.c:685) 
[ 1594.176567][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1594.176571][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1594.176575][ C3] __xa_store (lib/xarray.c:1703) 
[ 1594.176579][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1594.176584][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1594.176587][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1594.176590][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1594.176595][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1594.176599][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1594.176602][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1594.176606][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1594.176609][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1594.176612][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1594.176616][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1594.176619][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1594.176624][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1594.176628][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1594.176632][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1594.176636][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1594.176640][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1594.176647][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1594.176651][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1594.176655][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1594.176660][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1594.176664][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1594.176667][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1594.176670][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1594.176673][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1594.176679][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1594.176682][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1594.176687][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1594.176690][    C3] RIP: 0033:0x7f439756d93b
[ 1594.176694][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1594.176697][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1594.176700][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1594.176702][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1594.176704][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1594.176706][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1594.176707][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1608.656139][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1608.656147][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1608.656151][ C0] softirqs last disabled at (0): 0x0 
| [ 1608.656164][    C0] Tainted: [L]=SOFTLOCKUP
[ 1608.656165][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1608.656168][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1608.656176][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1608.656180][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1608.656183][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1608.656185][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1608.656187][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1608.656189][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1608.656191][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1608.656194][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1608.656196][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1608.656201][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1608.656203][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1608.656205][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1608.656219][    C0] PKRU: 55555554
[ 1608.656220][    C0] Call Trace:
[ 1608.656225][    C0]  <TASK>
[ 1608.656229][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1608.656234][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1608.656239][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1608.656243][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1608.656250][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1608.656254][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1608.656257][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1608.656260][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1608.656267][ C0] xa_store (lib/xarray.c:1734) 
[ 1608.656272][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1608.656277][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1608.656282][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1608.656285][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1608.656288][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1608.656294][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1608.656297][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1608.656304][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1608.656308][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1608.656313][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1608.656319][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1608.656324][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1608.656333][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1608.656337][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1608.656343][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1608.656349][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1608.656352][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1608.656356][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1608.656359][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1608.656363][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1608.656370][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1608.656374][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1608.656379][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1608.656384][    C0] RIP: 0033:0x7f439756d93b
[ 1608.656388][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1608.656391][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1608.656394][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1608.656396][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1608.656398][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1608.656400][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1608.656402][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1612.669133][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1612.669141][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1612.669144][ C2] softirqs last disabled at (0): 0x0 
| [ 1612.669156][    C2] Tainted: [L]=SOFTLOCKUP
[ 1612.669157][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1612.669160][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1612.669168][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1612.669171][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1612.669175][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1612.669177][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1612.669179][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1612.669181][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1612.669184][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1612.669186][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1612.669188][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1612.669192][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1612.669204][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1612.669205][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1612.669207][    C2] PKRU: 55555554
[ 1612.669208][    C2] Call Trace:
[ 1612.669212][    C2]  <TASK>
[ 1612.669216][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1612.669220][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1612.669226][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1612.669230][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1612.669236][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1612.669240][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1612.669243][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1612.669246][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1612.669252][ C2] xa_store (lib/xarray.c:1734) 
[ 1612.669257][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1612.669262][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1612.669267][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1612.669270][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1612.669273][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1612.669279][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1612.669283][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1612.669289][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1612.669293][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1612.669298][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1612.669304][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1612.669308][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1612.669317][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1612.669321][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1612.669326][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1612.669332][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1612.669335][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1612.669340][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1612.669343][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1612.669347][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1612.669353][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1612.669357][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1612.669362][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1612.669367][    C2] RIP: 0033:0x7f439756d93b
[ 1612.669373][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1612.669375][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1612.669379][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1612.669381][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1612.669383][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1612.669385][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1612.669386][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1620.669135][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1620.669143][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1620.669146][ C1] softirqs last disabled at (0): 0x0 
| [ 1620.669158][    C1] Tainted: [L]=SOFTLOCKUP
[ 1620.669160][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1620.669162][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1620.669170][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1620.669173][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1620.669176][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1620.669179][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1620.669180][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1620.669182][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1620.669185][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1620.669187][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1620.669190][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1620.669203][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1620.669205][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1620.669207][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1620.669208][    C1] PKRU: 55555554
[ 1620.669210][    C1] Call Trace:
[ 1620.669214][    C1]  <TASK>
[ 1620.669218][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1620.669222][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1620.669227][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1620.669231][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1620.669237][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1620.669241][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1620.669244][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1620.669247][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1620.669253][ C1] xa_store (lib/xarray.c:1734) 
[ 1620.669258][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1620.669263][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1620.669268][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1620.669271][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1620.669274][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1620.669279][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1620.669283][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1620.669290][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1620.669294][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1620.669298][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1620.669305][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1620.669309][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1620.669318][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1620.669321][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1620.669327][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1620.669332][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1620.669335][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1620.669339][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1620.669342][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1620.669346][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1620.669352][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1620.669356][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1620.669361][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1620.669366][    C1] RIP: 0033:0x7f439756d93b
[ 1620.669371][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1620.669374][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1620.669377][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1620.669379][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1620.669381][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1620.669383][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1620.669384][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1620.670127][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1620.670133][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1620.670137][ C3] softirqs last disabled at (0): 0x0 
| [ 1620.670147][    C3] Tainted: [L]=SOFTLOCKUP
[ 1620.670148][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1620.670150][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1620.670157][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1620.670160][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1620.670162][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1620.670164][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1620.670166][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1620.670168][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1620.670170][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1620.670177][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1620.670180][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1620.670183][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1620.670186][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1620.670187][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1620.670189][    C3] PKRU: 55555554
[ 1620.670191][    C3] Call Trace:
[ 1620.670194][    C3]  <IRQ>
[ 1620.670195][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1620.670201][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1620.670205][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1620.670208][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1620.670213][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1620.670218][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1620.670221][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1620.670225][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1620.670229][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1620.670233][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1620.670235][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1620.670238][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1620.670241][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1620.670246][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1620.670250][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1620.670253][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1620.670256][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1620.670262][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1620.670266][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1620.670271][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1620.670276][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1620.670281][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1620.670286][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1620.670289][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1620.670292][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1620.670295][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1620.670298][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1620.670302][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1620.670307][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1620.670310][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1620.670313][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1620.670317][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1620.670321][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1620.670325][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1620.670327][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1620.670330][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1620.670334][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1620.670338][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1620.670343][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1620.670346][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1620.670351][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1620.670355][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1620.670359][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1620.670364][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1620.670368][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1620.670374][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1620.670378][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1620.670381][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1620.670385][    C3]  </IRQ>
[ 1620.670386][    C3]  <TASK>
[ 1620.670388][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1620.670392][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1620.670395][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1620.670398][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1620.670401][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1620.670404][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1620.670405][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1620.670407][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1620.670409][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1620.670414][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1620.670420][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1620.670426][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1620.670430][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1620.670434][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1620.670437][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1620.670442][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1620.670444][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1620.670449][ C3] xas_alloc (lib/xarray.c:378) 
[ 1620.670454][ C3] xas_create (lib/xarray.c:685) 
[ 1620.670460][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1620.670464][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1620.670468][ C3] __xa_store (lib/xarray.c:1703) 
[ 1620.670472][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1620.670477][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1620.670480][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1620.670485][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1620.670490][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1620.670495][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1620.670498][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1620.670503][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1620.670505][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1620.670508][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1620.670512][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1620.670516][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1620.670521][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1620.670525][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1620.670530][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1620.670534][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1620.670538][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1620.670546][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1620.670549][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1620.670554][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1620.670558][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1620.670562][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1620.670566][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1620.670568][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1620.670572][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1620.670578][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1620.670581][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1620.670586][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1620.670589][    C3] RIP: 0033:0x7f439756d93b
[ 1620.670593][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1620.670596][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1620.670599][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1620.670601][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1620.670603][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1620.670605][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1620.670606][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1636.656135][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1636.656144][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1636.656147][ C0] softirqs last disabled at (0): 0x0 
| [ 1636.656159][    C0] Tainted: [L]=SOFTLOCKUP
[ 1636.656161][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1636.656163][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1636.656171][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1636.656175][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1636.656178][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1636.656180][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1636.656182][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1636.656184][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1636.656187][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1636.656188][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1636.656191][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1636.656195][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1636.656197][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1636.656199][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1636.656201][    C0] PKRU: 55555554
[ 1636.656202][    C0] Call Trace:
[ 1636.656206][    C0]  <TASK>
[ 1636.656210][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1636.656214][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1636.656219][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1636.656223][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1636.656240][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1636.656244][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1636.656247][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1636.656250][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1636.656256][ C0] xa_store (lib/xarray.c:1734) 
[ 1636.656261][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1636.656266][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1636.656271][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1636.656274][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1636.656277][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1636.656283][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1636.656287][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1636.656294][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1636.656298][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1636.656303][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1636.656308][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1636.656313][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1636.656322][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1636.656326][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1636.656332][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1636.656338][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1636.656341][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1636.656346][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1636.656349][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1636.656353][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1636.656359][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1636.656363][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1636.656368][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1636.656373][    C0] RIP: 0033:0x7f439756d93b
[ 1636.656377][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1636.656380][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1636.656383][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1636.656385][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1636.656387][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1636.656389][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1636.656391][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1640.669132][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1640.669140][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1640.669144][ C2] softirqs last disabled at (0): 0x0 
| [ 1640.669156][    C2] Tainted: [L]=SOFTLOCKUP
[ 1640.669157][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1640.669159][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1640.669167][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1640.669170][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1640.669173][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1640.669175][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1640.669177][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1640.669179][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1640.669181][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1640.669183][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1640.669186][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1640.669189][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1640.669192][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1640.669193][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1640.669195][    C2] PKRU: 55555554
[ 1640.669196][    C2] Call Trace:
[ 1640.669200][    C2]  <TASK>
[ 1640.669204][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1640.669208][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1640.669213][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1640.669217][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1640.669224][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1640.669228][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1640.669231][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1640.669234][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1640.669241][ C2] xa_store (lib/xarray.c:1734) 
[ 1640.669245][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1640.669250][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1640.669256][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1640.669259][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1640.669261][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1640.669267][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1640.669271][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1640.669278][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1640.669282][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1640.669287][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1640.669293][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1640.669298][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1640.669306][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1640.669310][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1640.669316][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1640.669321][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1640.669324][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1640.669330][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1640.669333][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1640.669336][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1640.669342][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1640.669346][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1640.669352][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1640.669357][    C2] RIP: 0033:0x7f439756d93b
[ 1640.669362][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1640.669364][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1640.669368][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1640.669370][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1640.669372][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1640.669374][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1640.669375][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1648.669168][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1648.669180][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1648.669185][ C1] softirqs last disabled at (0): 0x0 
| [ 1648.669203][    C1] Tainted: [L]=SOFTLOCKUP
[ 1648.669205][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1648.669209][ C1] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 1648.669218][ C1] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 1648.669223][    C1] RSP: 0018:ffffc900034b7a10 EFLAGS: 00000202
[ 1648.669227][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1648.669230][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1648.669233][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1648.669236][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1648.669239][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1648.669242][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1648.669245][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1648.669256][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1648.669259][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1648.669261][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1648.669264][    C1] PKRU: 55555554
[ 1648.669266][    C1] Call Trace:
[ 1648.669272][    C1]  <TASK>
[ 1648.669275][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1648.669294][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1648.669301][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1648.669310][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1648.669315][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1648.669324][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1648.669330][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1648.669334][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1648.669338][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1648.669347][ C1] xa_store (lib/xarray.c:1734) 
[ 1648.669353][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1648.669361][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1648.669369][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1648.669373][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1648.669377][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1648.669385][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1648.669390][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1648.669400][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1648.669405][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1648.669412][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1648.669421][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1648.669427][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1648.669439][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1648.669467][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1648.669475][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1648.669482][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1648.669487][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1648.669493][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1648.669497][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1648.669502][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1648.669511][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1648.669516][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1648.669523][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1648.669530][    C1] RIP: 0033:0x7f439756d93b
[ 1648.669538][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1648.669542][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1648.669546][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1648.669549][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1648.669552][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1648.669555][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1648.669557][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1648.670135][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1648.670142][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1648.670146][ C3] softirqs last disabled at (0): 0x0 
| [ 1648.670158][    C3] Tainted: [L]=SOFTLOCKUP
[ 1648.670160][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1648.670162][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1648.670170][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1648.670173][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1648.670176][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1648.670178][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1648.670180][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1648.670182][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1648.670184][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1648.670186][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1648.670189][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1648.670193][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1648.670195][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1648.670197][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1648.670199][    C3] PKRU: 55555554
[ 1648.670200][    C3] Call Trace:
[ 1648.670204][    C3]  <IRQ>
[ 1648.670206][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1648.670211][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1648.670227][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1648.670231][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1648.670236][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1648.670240][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1648.670244][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1648.670248][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1648.670252][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1648.670255][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1648.670257][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1648.670260][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1648.670263][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1648.670269][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1648.670273][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1648.670276][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1648.670280][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1648.670285][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1648.670289][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1648.670294][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1648.670299][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1648.670305][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1648.670311][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1648.670314][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1648.670317][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1648.670321][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1648.670324][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1648.670327][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1648.670333][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1648.670337][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1648.670339][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1648.670344][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1648.670349][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1648.670352][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1648.670355][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1648.670358][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1648.670361][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1648.670366][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1648.670370][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1648.670373][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1648.670379][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1648.670383][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1648.670386][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1648.670391][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1648.670396][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1648.670402][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1648.670406][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1648.670409][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1648.670415][    C3]  </IRQ>
[ 1648.670417][    C3]  <TASK>
[ 1648.670418][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1648.670424][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1648.670427][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1648.670430][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1648.670434][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1648.670436][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1648.670438][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1648.670440][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1648.670442][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1648.670446][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1648.670452][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1648.670457][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1648.670461][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1648.670466][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1648.670469][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1648.670473][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1648.670475][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1648.670480][ C3] xas_alloc (lib/xarray.c:378) 
[ 1648.670485][ C3] xas_create (lib/xarray.c:685) 
[ 1648.670491][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1648.670495][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1648.670499][ C3] __xa_store (lib/xarray.c:1703) 
[ 1648.670503][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1648.670508][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1648.670511][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1648.670514][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1648.670519][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1648.670523][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1648.670526][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1648.670531][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1648.670534][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1648.670537][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1648.670541][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1648.670545][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1648.670550][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1648.670554][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1648.670559][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1648.670563][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1648.670567][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1648.670576][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1648.670580][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1648.670585][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1648.670590][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1648.670593][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1648.670597][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1648.670601][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1648.670604][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1648.670611][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1648.670615][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1648.670620][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1648.670624][    C3] RIP: 0033:0x7f439756d93b
[ 1648.670628][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1648.670631][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1648.670634][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1648.670637][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1648.670638][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1648.670641][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1648.670643][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1664.656145][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1664.656155][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1664.656159][ C0] softirqs last disabled at (0): 0x0 
| [ 1664.656173][    C0] Tainted: [L]=SOFTLOCKUP
[ 1664.656174][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1664.656177][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1664.656187][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1664.656191][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1664.656194][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1664.656197][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1664.656199][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1664.656201][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1664.656203][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1664.656205][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1664.656208][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1664.656212][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1664.656215][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1664.656216][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1664.656218][    C0] PKRU: 55555554
[ 1664.656219][    C0] Call Trace:
[ 1664.656225][    C0]  <TASK>
[ 1664.656230][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1664.656234][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1664.656239][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1664.656244][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1664.656252][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1664.656256][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1664.656270][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1664.656273][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1664.656280][ C0] xa_store (lib/xarray.c:1734) 
[ 1664.656286][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1664.656292][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1664.656298][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1664.656301][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1664.656304][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1664.656311][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1664.656314][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1664.656323][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1664.656327][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1664.656332][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1664.656339][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1664.656344][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1664.656354][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1664.656358][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1664.656364][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1664.656370][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1664.656373][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1664.656378][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1664.656382][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1664.656385][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1664.656393][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1664.656397][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1664.656404][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1664.656409][    C0] RIP: 0033:0x7f439756d93b
[ 1664.656416][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1664.656418][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1664.656422][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1664.656424][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1664.656426][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1664.656428][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1664.656430][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1668.669137][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1668.669144][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1668.669148][ C2] softirqs last disabled at (0): 0x0 
| [ 1668.669160][    C2] Tainted: [L]=SOFTLOCKUP
[ 1668.669161][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1668.669163][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1668.669171][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1668.669183][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1668.669186][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1668.669188][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1668.669190][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1668.669192][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1668.669194][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1668.669196][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1668.669198][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1668.669202][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1668.669204][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1668.669206][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1668.669207][    C2] PKRU: 55555554
[ 1668.669209][    C2] Call Trace:
[ 1668.669212][    C2]  <TASK>
[ 1668.669216][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1668.669220][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1668.669225][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1668.669229][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1668.669237][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1668.669241][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1668.669243][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1668.669246][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1668.669253][ C2] xa_store (lib/xarray.c:1734) 
[ 1668.669257][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1668.669263][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1668.669268][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1668.669271][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1668.669274][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1668.669279][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1668.669283][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1668.669290][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1668.669294][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1668.669299][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1668.669305][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1668.669310][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1668.669318][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1668.669322][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1668.669328][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1668.669333][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1668.669336][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1668.669341][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1668.669344][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1668.669347][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1668.669354][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1668.669358][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1668.669363][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1668.669370][    C2] RIP: 0033:0x7f439756d93b
[ 1668.669375][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1668.669378][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1668.669381][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1668.669383][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1668.669385][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1668.669387][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1668.669389][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1672.187529][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 1672.187804][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 1672.188045][    C1] NMI backtrace for cpu 1
| [ 1672.188065][    C1] Tainted: [L]=SOFTLOCKUP
[ 1672.188067][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1672.188070][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 1672.188080][ C1] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 1672.188084][    C1] RSP: 0018:ffffc900034b7a00 EFLAGS: 00000282
[ 1672.188088][    C1] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1672.188090][    C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1672.188092][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1672.188094][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1672.188096][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1672.188099][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1672.188101][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1672.188105][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1672.188107][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1672.188108][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1672.188110][    C1] PKRU: 55555554
[ 1672.188111][    C1] Call Trace:
[ 1672.188113][    C1]  <TASK>
[ 1672.188115][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1672.188124][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1672.188127][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1672.188133][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1672.188137][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1672.188144][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1672.188147][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1672.188150][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1672.188153][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1672.188160][ C1] xa_store (lib/xarray.c:1734) 
[ 1672.188164][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1672.188169][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1672.188174][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1672.188177][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1672.188180][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1672.188187][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1672.188190][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1672.188198][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1672.188202][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1672.188208][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1672.188214][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1672.188226][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1672.188235][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1672.188239][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1672.188246][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1672.188253][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1672.188257][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1672.188262][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1672.188265][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1672.188269][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1672.188276][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1672.188280][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1672.188286][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1672.188290][    C1] RIP: 0033:0x7f439756d93b
[ 1672.188296][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1672.188298][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1672.188302][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1672.188304][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1672.188306][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1672.188308][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1672.188309][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1672.188308][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 1672.188309][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1672.188315][    C1]  </TASK>
| [ 1672.189049][    C3] Tainted: [L]=SOFTLOCKUP
[ 1672.189050][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1672.189052][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1672.189058][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1672.189062][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1672.189065][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1672.189068][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1672.189070][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1672.189072][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1672.189074][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1672.189076][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1672.189079][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1672.189083][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1672.189085][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1672.189086][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1672.189088][    C3] PKRU: 55555554
[ 1672.189089][    C3] Call Trace:
[ 1672.189091][    C3]  <IRQ>
[ 1672.189093][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1672.189098][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1672.189103][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1672.189106][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1672.189109][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1672.189114][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1672.189117][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1672.189124][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1672.189127][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1672.189130][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1672.189133][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1672.189135][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1672.189139][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1672.189144][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1672.189148][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1672.189151][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1672.189154][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1672.189159][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1672.189163][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1672.189168][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1672.189172][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1672.189179][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1672.189184][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1672.189187][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1672.189190][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1672.189193][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1672.189196][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1672.189199][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1672.189205][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1672.189208][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1672.189212][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1672.189216][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1672.189220][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1672.189224][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1672.189226][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1672.189230][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1672.189234][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1672.189238][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1672.189242][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1672.189245][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1672.189250][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1672.189254][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1672.189257][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1672.189262][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1672.189266][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1672.189272][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1672.189275][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1672.189278][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1672.189282][    C3]  </IRQ>
[ 1672.189283][    C3]  <TASK>
[ 1672.189285][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1672.189289][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1672.189293][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1672.189298][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1672.189301][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1672.189303][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1672.189304][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1672.189307][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1672.189309][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1672.189313][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1672.189319][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1672.189324][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1672.189328][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1672.189333][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1672.189336][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1672.189340][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1672.189343][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1672.189348][ C3] xas_alloc (lib/xarray.c:378) 
[ 1672.189352][ C3] xas_create (lib/xarray.c:685) 
[ 1672.189358][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1672.189362][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1672.189366][ C3] __xa_store (lib/xarray.c:1703) 
[ 1672.189370][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1672.189375][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1672.189378][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1672.189381][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1672.189386][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1672.189390][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1672.189393][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1672.189398][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1672.189401][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1672.189403][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1672.189407][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1672.189411][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1672.189415][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1672.189419][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1672.189424][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1672.189428][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1672.189432][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1672.189439][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1672.189443][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1672.189448][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1672.189454][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1672.189457][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1672.189460][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1672.189463][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1672.189466][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1672.189473][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1672.189476][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1672.189481][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1672.189485][    C3] RIP: 0033:0x7f439756d93b
[ 1672.189490][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1672.189493][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1672.189496][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1672.189497][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1672.189499][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1672.189501][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1672.189502][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1692.656143][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1692.656153][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1692.656157][ C0] softirqs last disabled at (0): 0x0 
| [ 1692.656171][    C0] Tainted: [L]=SOFTLOCKUP
[ 1692.656172][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1692.656176][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1692.656186][ C0] Code: 00 00 fc ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 <8b> 45 00 89 44 24 40 85 c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	fc                   	cld
   3:	ff                   	lcall  (bad)
   4:	df 49 01             	fisttps 0x1(%rcx)
   7:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   b:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
  11:	48 89 ef             	mov    %rbp,%rdi
  14:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b876
  19:	41 0f b6 06          	movzbl (%r14),%eax
  1d:	41 38 c5             	cmp    %al,%r13b
  20:	7c 08                	jl     0x2a
  22:	84 c0                	test   %al,%al
  24:	0f 85 8d 07 00 00    	jne    0x7b7
  2a:*	8b 45 00             	mov    0x0(%rbp),%eax		<-- trapping instruction
  2d:	89 44 24 40          	mov    %eax,0x40(%rsp)
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 6e 01 00 00    	jne    0x1a7
  39:	48 89 ef             	mov    %rbp,%rdi
  3c:	be                   	.byte 0xbe
  3d:	04 00                	add    $0x0,%al
	...

Code starting with the faulting instruction
===========================================
   0:	8b 45 00             	mov    0x0(%rbp),%eax
   3:	89 44 24 40          	mov    %eax,0x40(%rsp)
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 6e 01 00 00    	jne    0x17d
   f:	48 89 ef             	mov    %rbp,%rdi
  12:	be                   	.byte 0xbe
  13:	04 00                	add    $0x0,%al
	...
[ 1692.656190][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000246
[ 1692.656193][    C0] RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1692.656196][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1692.656198][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1692.656200][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1692.656202][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1692.656204][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1692.656207][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1692.656211][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1692.656213][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1692.656215][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1692.656217][    C0] PKRU: 55555554
[ 1692.656218][    C0] Call Trace:
[ 1692.656223][    C0]  <TASK>
[ 1692.656228][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1692.656232][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1692.656237][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1692.656242][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1692.656250][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1692.656254][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1692.656256][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1692.656259][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1692.656266][ C0] xa_store (lib/xarray.c:1734) 
[ 1692.656271][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1692.656278][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1692.656283][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1692.656294][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1692.656297][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1692.656304][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1692.656308][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1692.656315][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1692.656319][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1692.656325][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1692.656332][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1692.656337][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1692.656347][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1692.656351][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1692.656358][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1692.656363][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1692.656367][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1692.656372][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1692.656376][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1692.656380][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1692.656387][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1692.656392][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1692.656398][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1692.656403][    C0] RIP: 0033:0x7f439756d93b
[ 1692.656408][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1692.656411][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1692.656415][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1692.656417][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1692.656418][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1692.656421][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1692.656423][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1696.669136][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1696.669144][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1696.669148][ C2] softirqs last disabled at (0): 0x0 
| [ 1696.669161][    C2] Tainted: [L]=SOFTLOCKUP
[ 1696.669162][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1696.669164][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1696.669173][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1696.669176][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1696.669179][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1696.669182][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1696.669184][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1696.669186][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1696.669193][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1696.669195][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1696.669197][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1696.669201][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1696.669203][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1696.669205][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1696.669207][    C2] PKRU: 55555554
[ 1696.669209][    C2] Call Trace:
[ 1696.669211][    C2]  <TASK>
[ 1696.669215][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1696.669219][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1696.669224][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1696.669228][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1696.669236][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1696.669240][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1696.669243][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1696.669246][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1696.669252][ C2] xa_store (lib/xarray.c:1734) 
[ 1696.669256][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1696.669261][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1696.669266][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1696.669269][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1696.669272][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1696.669278][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1696.669281][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1696.669288][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1696.669292][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1696.669296][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1696.669302][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1696.669307][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1696.669315][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1696.669318][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1696.669324][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1696.669328][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1696.669332][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1696.669336][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1696.669339][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1696.669343][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1696.669349][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1696.669353][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1696.669358][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1696.669363][    C2] RIP: 0033:0x7f439756d93b
[ 1696.669367][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1696.669370][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1696.669373][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1696.669375][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1696.669377][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1696.669381][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1696.669383][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1696.669429][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1696.669438][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1696.669442][ C1] softirqs last disabled at (0): 0x0 
| [ 1696.669456][    C1] Tainted: [L]=SOFTLOCKUP
[ 1696.669457][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1696.669460][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1696.669469][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1696.669473][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1696.669476][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1696.669478][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1696.669480][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1696.669482][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1696.669484][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1696.669486][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1696.669489][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1696.669493][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1696.669495][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1696.669497][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1696.669499][    C1] PKRU: 55555554
[ 1696.669500][    C1] Call Trace:
[ 1696.669504][    C1]  <TASK>
[ 1696.669509][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1696.669513][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1696.669519][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1696.669523][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1696.669530][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1696.669534][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1696.669537][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1696.669540][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1696.669547][ C1] xa_store (lib/xarray.c:1734) 
[ 1696.669552][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1696.669558][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1696.669563][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1696.669566][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1696.669569][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1696.669575][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1696.669579][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1696.669586][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1696.669596][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1696.669601][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1696.669608][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1696.669613][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1696.669622][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1696.669626][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1696.669632][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1696.669637][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1696.669641][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1696.669646][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1696.669649][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1696.669653][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1696.669660][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1696.669664][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1696.669670][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1696.669675][    C1] RIP: 0033:0x7f439756d93b
[ 1696.669681][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1696.669684][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1696.669687][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1696.669689][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1696.669691][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1696.669693][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1696.669695][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1696.670127][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1696.670133][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1696.670137][ C3] softirqs last disabled at (0): 0x0 
| [ 1696.670147][    C3] Tainted: [L]=SOFTLOCKUP
[ 1696.670148][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1696.670150][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1696.670155][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1696.670158][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1696.670161][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1696.670163][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1696.670165][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1696.670167][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1696.670169][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1696.670172][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1696.670174][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1696.670178][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1696.670181][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1696.670182][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1696.670189][    C3] PKRU: 55555554
[ 1696.670191][    C3] Call Trace:
[ 1696.670193][    C3]  <IRQ>
[ 1696.670194][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1696.670200][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1696.670204][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1696.670208][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1696.670212][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1696.670217][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1696.670220][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1696.670224][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1696.670228][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1696.670231][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1696.670233][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1696.670236][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1696.670239][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1696.670244][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1696.670248][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1696.670251][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1696.670254][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1696.670260][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1696.670264][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1696.670269][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1696.670273][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1696.670279][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1696.670283][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1696.670286][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1696.670289][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1696.670292][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1696.670296][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1696.670299][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1696.670304][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1696.670307][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1696.670310][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1696.670315][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1696.670319][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1696.670322][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1696.670325][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1696.670329][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1696.670332][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1696.670336][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1696.670341][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1696.670344][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1696.670349][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1696.670353][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1696.670356][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1696.670363][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1696.670368][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1696.670373][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1696.670377][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1696.670380][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1696.670384][    C3]  </IRQ>
[ 1696.670385][    C3]  <TASK>
[ 1696.670387][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1696.670391][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1696.670395][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1696.670397][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1696.670400][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1696.670403][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1696.670405][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1696.670407][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1696.670409][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1696.670413][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1696.670418][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1696.670424][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1696.670428][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1696.670432][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1696.670435][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1696.670440][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1696.670442][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1696.670447][ C3] xas_alloc (lib/xarray.c:378) 
[ 1696.670452][ C3] xas_create (lib/xarray.c:685) 
[ 1696.670458][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1696.670462][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1696.670466][ C3] __xa_store (lib/xarray.c:1703) 
[ 1696.670471][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1696.670475][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1696.670478][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1696.670481][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1696.670486][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1696.670490][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1696.670494][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1696.670499][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1696.670502][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1696.670504][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1696.670508][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1696.670512][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1696.670516][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1696.670520][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1696.670525][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1696.670528][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1696.670533][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1696.670540][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1696.670545][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1696.670550][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1696.670554][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1696.670557][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1696.670561][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1696.670563][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1696.670567][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1696.670573][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1696.670576][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1696.670581][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1696.670583][    C3] RIP: 0033:0x7f439756d93b
[ 1696.670586][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1696.670589][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1696.670592][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1696.670594][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1696.670595][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1696.670597][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1696.670599][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1720.656172][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1720.656194][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1720.656198][ C0] softirqs last disabled at (0): 0x0 
| [ 1720.656213][    C0] Tainted: [L]=SOFTLOCKUP
[ 1720.656215][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1720.656218][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1720.656231][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1720.656236][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1720.656242][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1720.656244][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1720.656246][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1720.656248][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1720.656250][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1720.656252][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1720.656254][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1720.656258][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1720.656260][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1720.656261][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1720.656263][    C0] PKRU: 55555554
[ 1720.656264][    C0] Call Trace:
[ 1720.656271][    C0]  <TASK>
[ 1720.656277][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1720.656284][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1720.656295][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1720.656299][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1720.656308][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1720.656318][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1720.656321][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1720.656325][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1720.656332][ C0] xa_store (lib/xarray.c:1734) 
[ 1720.656341][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1720.656350][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1720.656355][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1720.656358][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1720.656361][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1720.656369][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1720.656373][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1720.656381][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1720.656385][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1720.656390][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1720.656402][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1720.656407][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1720.656418][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1720.656422][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1720.656429][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1720.656436][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1720.656439][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1720.656447][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1720.656450][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1720.656454][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1720.656465][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1720.656469][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1720.656478][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1720.656490][    C0] RIP: 0033:0x7f439756d93b
[ 1720.656497][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1720.656500][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1720.656504][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1720.656506][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1720.656508][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1720.656510][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1720.656512][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1724.669135][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1724.669144][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1724.669148][ C2] softirqs last disabled at (0): 0x0 
| [ 1724.669169][    C2] Tainted: [L]=SOFTLOCKUP
[ 1724.669170][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1724.669172][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 1724.669179][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 1724.669182][    C2] RSP: 0018:ffffc900034d7a00 EFLAGS: 00000282
[ 1724.669185][    C2] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1724.669188][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1724.669190][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1724.669192][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1724.669194][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1724.669196][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1724.669199][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1724.669202][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1724.669204][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1724.669206][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1724.669208][    C2] PKRU: 55555554
[ 1724.669209][    C2] Call Trace:
[ 1724.669212][    C2]  <TASK>
[ 1724.669214][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1724.669224][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1724.669228][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1724.669233][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1724.669237][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1724.669244][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1724.669247][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1724.669250][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1724.669253][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1724.669259][ C2] xa_store (lib/xarray.c:1734) 
[ 1724.669264][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1724.669269][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1724.669274][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1724.669277][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1724.669280][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1724.669286][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1724.669290][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1724.669297][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1724.669301][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1724.669305][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1724.669312][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1724.669316][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1724.669325][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1724.669329][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1724.669334][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1724.669339][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1724.669342][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1724.669350][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1724.669353][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1724.669357][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1724.669364][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1724.669368][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1724.669373][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1724.669378][    C2] RIP: 0033:0x7f439756d93b
[ 1724.669384][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1724.669387][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1724.669390][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1724.669392][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1724.669394][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1724.669396][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1724.669398][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1724.669442][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1724.669459][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1724.669463][ C1] softirqs last disabled at (0): 0x0 
| [ 1724.669476][    C1] Tainted: [L]=SOFTLOCKUP
[ 1724.669478][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1724.669481][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1724.669490][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1724.669493][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1724.669497][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1724.669499][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1724.669501][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1724.669503][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1724.669505][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1724.669508][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1724.669510][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1724.669514][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1724.669516][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1724.669518][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1724.669520][    C1] PKRU: 55555554
[ 1724.669521][    C1] Call Trace:
[ 1724.669525][    C1]  <TASK>
[ 1724.669529][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1724.669534][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1724.669539][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1724.669544][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1724.669551][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1724.669555][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1724.669560][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1724.669564][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1724.669571][ C1] xa_store (lib/xarray.c:1734) 
[ 1724.669575][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1724.669580][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1724.669586][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1724.669589][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1724.669592][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1724.669599][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1724.669602][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1724.669610][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1724.669614][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1724.669619][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1724.669626][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1724.669630][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1724.669639][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1724.669643][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1724.669649][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1724.669655][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1724.669658][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1724.669663][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1724.669666][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1724.669670][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1724.669677][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1724.669681][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1724.669687][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1724.669692][    C1] RIP: 0033:0x7f439756d93b
[ 1724.669697][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1724.669700][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1724.669704][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1724.669705][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1724.669707][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1724.669709][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1724.669711][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1724.670129][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1724.670136][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1724.670140][ C3] softirqs last disabled at (0): 0x0 
| [ 1724.670150][    C3] Tainted: [L]=SOFTLOCKUP
[ 1724.670151][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1724.670153][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 1724.670157][ C3] Code: 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff 5b b8 01 00 00 00 5d 41 5c <c3> cc cc cc cc 41 bc 08 00 00 00 45 29 dc 49 8d 14 2c eb 0c 48 83
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	48 85 d2             	test   %rdx,%rdx
   5:	0f 84 4c ff ff ff    	je     0xffffffffffffff57
   b:	41 83 e2 07          	and    $0x7,%r10d
   f:	49 39 d1             	cmp    %rdx,%r9
  12:	0f 85 34 ff ff ff    	jne    0xffffffffffffff4c
  18:	45 3a 11             	cmp    (%r9),%r10b
  1b:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff4c
  21:	5b                   	pop    %rbx
  22:	b8 01 00 00 00       	mov    $0x1,%eax
  27:	5d                   	pop    %rbp
  28:	41 5c                	pop    %r12
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  35:	45 29 dc             	sub    %r11d,%r12d
  38:	49 8d 14 2c          	lea    (%r12,%rbp,1),%rdx
  3c:	eb 0c                	jmp    0x4a
  3e:	48                   	rex.W
  3f:	83                   	.byte 0x83

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	41 bc 08 00 00 00    	mov    $0x8,%r12d
   b:	45 29 dc             	sub    %r11d,%r12d
   e:	49 8d 14 2c          	lea    (%r12,%rbp,1),%rdx
  12:	eb 0c                	jmp    0x20
  14:	48                   	rex.W
  15:	83                   	.byte 0x83
[ 1724.670165][    C3] RSP: 0018:ffffc90000270a40 EFLAGS: 00000246
[ 1724.670168][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1724.670170][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1724.670172][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1724.670174][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1724.670176][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1724.670178][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1724.670180][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1724.670184][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1724.670186][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1724.670188][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1724.670190][    C3] PKRU: 55555554
[ 1724.670191][    C3] Call Trace:
[ 1724.670193][    C3]  <IRQ>
[ 1724.670195][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1724.670202][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1724.670206][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1724.670211][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1724.670214][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1724.670219][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1724.670223][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1724.670226][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1724.670230][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1724.670234][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1724.670237][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1724.670239][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1724.670242][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1724.670245][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1724.670250][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1724.670255][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1724.670258][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1724.670261][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1724.670266][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1724.670273][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1724.670278][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1724.670283][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1724.670288][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1724.670292][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1724.670295][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1724.670298][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1724.670302][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1724.670305][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1724.670308][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1724.670318][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1724.670321][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1724.670324][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1724.670330][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1724.670335][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1724.670338][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1724.670341][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1724.670346][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1724.670350][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1724.670354][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1724.670361][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1724.670364][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1724.670371][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1724.670375][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1724.670378][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1724.670383][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1724.670388][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1724.670393][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1724.670397][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1724.670400][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1724.670404][    C3]  </IRQ>
[ 1724.670406][    C3]  <TASK>
[ 1724.670407][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1724.670412][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1724.670415][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1724.670418][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1724.670421][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1724.670423][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1724.670425][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1724.670427][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1724.670428][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1724.670433][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1724.670438][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1724.670444][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1724.670448][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1724.670452][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1724.670455][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1724.670460][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1724.670462][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1724.670467][ C3] xas_alloc (lib/xarray.c:378) 
[ 1724.670472][ C3] xas_create (lib/xarray.c:685) 
[ 1724.670478][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1724.670483][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1724.670486][ C3] __xa_store (lib/xarray.c:1703) 
[ 1724.670491][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1724.670495][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1724.670498][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1724.670501][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1724.670506][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1724.670510][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1724.670515][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1724.670520][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1724.670523][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1724.670527][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1724.670531][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1724.670535][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1724.670540][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1724.670543][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1724.670548][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1724.670552][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1724.670557][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1724.670565][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1724.670569][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1724.670573][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1724.670577][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1724.670581][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1724.670584][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1724.670587][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1724.670590][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1724.670596][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1724.670599][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1724.670604][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1724.670607][    C3] RIP: 0033:0x7f439756d93b
[ 1724.670613][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1724.670615][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1724.670618][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1724.670620][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1724.670622][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1724.670624][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1724.670625][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1748.656145][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1748.656155][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1748.656159][ C0] softirqs last disabled at (0): 0x0 
| [ 1748.656173][    C0] Tainted: [L]=SOFTLOCKUP
[ 1748.656175][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1748.656178][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1748.656188][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1748.656191][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1748.656194][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1748.656196][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1748.656206][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1748.656208][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1748.656210][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1748.656212][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1748.656215][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1748.656219][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1748.656222][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1748.656224][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1748.656226][    C0] PKRU: 55555554
[ 1748.656227][    C0] Call Trace:
[ 1748.656232][    C0]  <TASK>
[ 1748.656237][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1748.656241][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1748.656247][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1748.656251][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1748.656259][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1748.656263][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1748.656266][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1748.656270][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1748.656277][ C0] xa_store (lib/xarray.c:1734) 
[ 1748.656282][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1748.656289][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1748.656294][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1748.656297][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1748.656300][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1748.656307][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1748.656311][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1748.656318][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1748.656322][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1748.656327][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1748.656334][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1748.656339][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1748.656348][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1748.656352][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1748.656359][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1748.656364][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1748.656368][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1748.656373][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1748.656376][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1748.656380][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1748.656387][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1748.656391][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1748.656398][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1748.656404][    C0] RIP: 0033:0x7f439756d93b
[ 1748.656409][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1748.656412][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1748.656416][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1748.656418][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1748.656420][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1748.656422][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1748.656424][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1750.202368][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 1750.202645][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 1750.202901][    C1] NMI backtrace for cpu 1
| [ 1750.202920][    C1] Tainted: [L]=SOFTLOCKUP
[ 1750.202922][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1750.202925][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1750.202937][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1750.202941][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1750.202945][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1750.202947][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1750.202950][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1750.202952][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1750.202954][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1750.202956][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1750.202959][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1750.202963][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1750.202964][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1750.202966][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1750.202968][    C1] PKRU: 55555554
[ 1750.202969][    C1] Call Trace:
[ 1750.202970][    C1]  <TASK>
[ 1750.202973][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1750.202977][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1750.202983][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1750.202987][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1750.202995][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1750.202998][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1750.203000][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1750.203004][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1750.203010][ C1] xa_store (lib/xarray.c:1734) 
[ 1750.203014][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1750.203019][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1750.203024][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1750.203027][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1750.203033][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1750.203039][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1750.203043][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1750.203051][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1750.203055][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1750.203060][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1750.203067][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1750.203071][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1750.203081][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1750.203084][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1750.203091][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1750.203098][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1750.203101][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1750.203106][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1750.203109][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1750.203113][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1750.203120][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1750.203124][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1750.203130][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1750.203135][    C1] RIP: 0033:0x7f439756d93b
[ 1750.203141][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1750.203143][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1750.203147][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1750.203149][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1750.203151][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1750.203153][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1750.203155][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1750.203153][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 1750.203155][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1750.203161][    C1]  </TASK>
| [ 1750.203896][    C3] Tainted: [L]=SOFTLOCKUP
[ 1750.203898][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1750.203901][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1750.203909][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1750.203912][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1750.203917][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1750.203919][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1750.203921][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1750.203923][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1750.203925][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1750.203927][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1750.203929][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1750.203933][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1750.203935][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1750.203937][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1750.203938][    C3] PKRU: 55555554
[ 1750.203940][    C3] Call Trace:
[ 1750.203941][    C3]  <IRQ>
[ 1750.203943][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1750.203949][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1750.203953][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1750.203956][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1750.203959][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1750.203965][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1750.203968][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1750.203972][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1750.203975][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1750.203979][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1750.203981][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1750.203984][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1750.203987][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1750.203992][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1750.203996][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1750.203999][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1750.204003][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1750.204009][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1750.204012][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1750.204018][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1750.204022][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1750.204029][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1750.204034][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1750.204037][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1750.204040][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1750.204043][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1750.204046][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1750.204049][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1750.204055][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1750.204058][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1750.204062][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1750.204066][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1750.204070][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1750.204073][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1750.204076][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1750.204080][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1750.204083][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1750.204087][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1750.204092][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1750.204094][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1750.204099][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1750.204103][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1750.204106][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1750.204111][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1750.204115][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1750.204120][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1750.204124][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1750.204127][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1750.204130][    C3]  </IRQ>
[ 1750.204131][    C3]  <TASK>
[ 1750.204133][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1750.204137][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1750.204140][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1750.204143][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1750.204145][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1750.204147][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1750.204148][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1750.204150][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1750.204152][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1750.204157][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1750.204162][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1750.204168][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1750.204172][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1750.204176][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1750.204179][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1750.204183][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1750.204186][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1750.204190][ C3] xas_alloc (lib/xarray.c:378) 
[ 1750.204195][ C3] xas_create (lib/xarray.c:685) 
[ 1750.204201][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1750.204205][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1750.204209][ C3] __xa_store (lib/xarray.c:1703) 
[ 1750.204212][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1750.204217][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1750.204220][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1750.204223][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1750.204228][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1750.204231][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1750.204234][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1750.204239][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1750.204242][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1750.204245][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1750.204249][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1750.204252][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1750.204257][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1750.204260][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1750.204265][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1750.204269][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1750.204273][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1750.204280][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1750.204284][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1750.204289][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1750.204295][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1750.204298][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1750.204302][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1750.204304][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1750.204308][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1750.204314][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1750.204317][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1750.204322][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1750.204325][    C3] RIP: 0033:0x7f439756d93b
[ 1750.204330][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1750.204332][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1750.204335][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1750.204340][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1750.204341][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1750.204343][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1750.204345][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1752.669133][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1752.669140][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1752.669143][ C2] softirqs last disabled at (0): 0x0 
| [ 1752.669154][    C2] Tainted: [L]=SOFTLOCKUP
[ 1752.669156][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1752.669158][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1752.669164][ C2] Code: 00 00 fc ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 <8b> 45 00 89 44 24 40 85 c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	fc                   	cld
   3:	ff                   	lcall  (bad)
   4:	df 49 01             	fisttps 0x1(%rcx)
   7:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   b:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
  11:	48 89 ef             	mov    %rbp,%rdi
  14:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b876
  19:	41 0f b6 06          	movzbl (%r14),%eax
  1d:	41 38 c5             	cmp    %al,%r13b
  20:	7c 08                	jl     0x2a
  22:	84 c0                	test   %al,%al
  24:	0f 85 8d 07 00 00    	jne    0x7b7
  2a:*	8b 45 00             	mov    0x0(%rbp),%eax		<-- trapping instruction
  2d:	89 44 24 40          	mov    %eax,0x40(%rsp)
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 6e 01 00 00    	jne    0x1a7
  39:	48 89 ef             	mov    %rbp,%rdi
  3c:	be                   	.byte 0xbe
  3d:	04 00                	add    $0x0,%al
	...

Code starting with the faulting instruction
===========================================
   0:	8b 45 00             	mov    0x0(%rbp),%eax
   3:	89 44 24 40          	mov    %eax,0x40(%rsp)
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 6e 01 00 00    	jne    0x17d
   f:	48 89 ef             	mov    %rbp,%rdi
  12:	be                   	.byte 0xbe
  13:	04 00                	add    $0x0,%al
	...
[ 1752.669167][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000246
[ 1752.669170][    C2] RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1752.669172][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1752.669184][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1752.669186][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1752.669187][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1752.669189][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1752.669192][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1752.669196][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1752.669198][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1752.669200][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1752.669202][    C2] PKRU: 55555554
[ 1752.669203][    C2] Call Trace:
[ 1752.669207][    C2]  <TASK>
[ 1752.669210][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1752.669214][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1752.669219][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1752.669222][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1752.669229][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1752.669233][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1752.669236][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1752.669238][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1752.669244][ C2] xa_store (lib/xarray.c:1734) 
[ 1752.669249][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1752.669254][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1752.669259][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1752.669262][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1752.669264][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1752.669270][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1752.669273][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1752.669281][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1752.669285][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1752.669290][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1752.669295][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1752.669299][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1752.669307][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1752.669310][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1752.669315][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1752.669320][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1752.669323][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1752.669327][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1752.669330][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1752.669334][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1752.669340][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1752.669344][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1752.669349][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1752.669353][    C2] RIP: 0033:0x7f439756d93b
[ 1752.669357][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1752.669360][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1752.669363][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1752.669365][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1752.669367][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1752.669369][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1752.669371][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1776.656146][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1776.656156][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1776.656160][ C0] softirqs last disabled at (0): 0x0 
| [ 1776.656174][    C0] Tainted: [L]=SOFTLOCKUP
[ 1776.656176][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1776.656179][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1776.656190][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1776.656193][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1776.656197][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1776.656199][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1776.656201][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1776.656204][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1776.656206][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1776.656208][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1776.656211][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1776.656215][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1776.656217][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1776.656230][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1776.656232][    C0] PKRU: 55555554
[ 1776.656233][    C0] Call Trace:
[ 1776.656238][    C0]  <TASK>
[ 1776.656243][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1776.656247][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1776.656253][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1776.656257][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1776.656266][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1776.656270][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1776.656273][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1776.656276][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1776.656283][ C0] xa_store (lib/xarray.c:1734) 
[ 1776.656288][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1776.656295][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1776.656300][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1776.656304][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1776.656306][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1776.656314][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1776.656317][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1776.656325][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1776.656329][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1776.656334][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1776.656342][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1776.656347][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1776.656358][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1776.656362][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1776.656369][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1776.656374][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1776.656378][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1776.656383][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1776.656387][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1776.656390][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1776.656398][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1776.656402][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1776.656408][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1776.656413][    C0] RIP: 0033:0x7f439756d93b
[ 1776.656419][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1776.656422][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1776.656425][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1776.656427][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1776.656429][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1776.656431][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1776.656434][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1776.669131][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1776.669138][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1776.669141][ C1] softirqs last disabled at (0): 0x0 
| [ 1776.669152][    C1] Tainted: [L]=SOFTLOCKUP
[ 1776.669154][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1776.669156][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1776.669162][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1776.669165][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1776.669167][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1776.669170][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1776.669172][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1776.669174][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1776.669176][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1776.669178][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1776.669181][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1776.669184][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1776.669186][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1776.669188][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1776.669190][    C1] PKRU: 55555554
[ 1776.669191][    C1] Call Trace:
[ 1776.669193][    C1]  <TASK>
[ 1776.669196][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1776.669201][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1776.669205][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1776.669208][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1776.669214][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1776.669217][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1776.669220][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1776.669223][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1776.669229][ C1] xa_store (lib/xarray.c:1734) 
[ 1776.669233][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1776.669237][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1776.669243][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1776.669246][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1776.669249][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1776.669254][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1776.669257][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1776.669264][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1776.669268][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1776.669272][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1776.669277][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1776.669281][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1776.669288][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1776.669295][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1776.669299][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1776.669304][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1776.669310][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1776.669314][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1776.669317][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1776.669321][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1776.669327][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1776.669331][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1776.669335][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1776.669339][    C1] RIP: 0033:0x7f439756d93b
[ 1776.669343][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1776.669347][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1776.669350][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1776.669352][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1776.669354][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1776.669356][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1776.669358][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1776.670136][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1776.670144][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1776.670148][ C3] softirqs last disabled at (0): 0x0 
| [ 1776.670159][    C3] Tainted: [L]=SOFTLOCKUP
[ 1776.670160][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1776.670163][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1776.670170][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1776.670174][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1776.670177][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1776.670179][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1776.670181][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1776.670183][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1776.670185][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1776.670188][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1776.670191][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1776.670194][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1776.670197][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1776.670198][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1776.670200][    C3] PKRU: 55555554
[ 1776.670201][    C3] Call Trace:
[ 1776.670205][    C3]  <IRQ>
[ 1776.670207][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1776.670220][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1776.670225][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1776.670229][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1776.670233][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1776.670238][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1776.670241][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1776.670246][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1776.670249][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1776.670253][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1776.670255][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1776.670258][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1776.670261][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1776.670267][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1776.670272][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1776.670274][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1776.670278][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1776.670284][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1776.670288][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1776.670294][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1776.670298][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1776.670305][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1776.670310][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1776.670313][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1776.670316][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1776.670320][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1776.670324][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1776.670326][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1776.670332][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1776.670335][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1776.670339][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1776.670343][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1776.670348][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1776.670351][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1776.670354][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1776.670357][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1776.670361][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1776.670365][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1776.670370][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1776.670373][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1776.670379][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1776.670383][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1776.670386][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1776.670391][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1776.670396][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1776.670402][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1776.670405][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1776.670409][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1776.670414][    C3]  </IRQ>
[ 1776.670415][    C3]  <TASK>
[ 1776.670417][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1776.670422][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1776.670425][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1776.670428][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1776.670431][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1776.670433][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1776.670435][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1776.670437][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1776.670439][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1776.670443][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1776.670449][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1776.670455][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1776.670458][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1776.670463][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1776.670466][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1776.670470][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1776.670473][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1776.670478][ C3] xas_alloc (lib/xarray.c:378) 
[ 1776.670483][ C3] xas_create (lib/xarray.c:685) 
[ 1776.670489][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1776.670493][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1776.670497][ C3] __xa_store (lib/xarray.c:1703) 
[ 1776.670502][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1776.670506][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1776.670509][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1776.670512][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1776.670517][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1776.670521][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1776.670525][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1776.670530][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1776.670533][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1776.670536][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1776.670540][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1776.670543][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1776.670548][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1776.670551][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1776.670556][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1776.670560][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1776.670565][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1776.670572][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1776.670576][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1776.670582][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1776.670587][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1776.670590][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1776.670595][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1776.670598][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1776.670601][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1776.670608][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1776.670612][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1776.670616][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1776.670620][    C3] RIP: 0033:0x7f439756d93b
[ 1776.670624][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1776.670631][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1776.670634][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1776.670636][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1776.670638][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1776.670640][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1776.670642][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1780.669130][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1780.669137][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1780.669140][ C2] softirqs last disabled at (0): 0x0 
| [ 1780.669151][    C2] Tainted: [L]=SOFTLOCKUP
[ 1780.669153][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1780.669155][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1780.669161][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1780.669164][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1780.669167][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1780.669169][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1780.669171][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1780.669173][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1780.669175][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1780.669177][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1780.669179][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1780.669191][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1780.669193][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1780.669195][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1780.669196][    C2] PKRU: 55555554
[ 1780.669198][    C2] Call Trace:
[ 1780.669201][    C2]  <TASK>
[ 1780.669205][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1780.669209][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1780.669213][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1780.669217][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1780.669223][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1780.669227][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1780.669232][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1780.669235][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1780.669240][ C2] xa_store (lib/xarray.c:1734) 
[ 1780.669245][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1780.669249][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1780.669254][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1780.669258][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1780.669260][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1780.669265][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1780.669269][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1780.669275][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1780.669279][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1780.669283][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1780.669289][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1780.669293][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1780.669300][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1780.669304][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1780.669309][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1780.669314][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1780.669317][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1780.669321][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1780.669324][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1780.669328][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1780.669334][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1780.669338][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1780.669342][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1780.669346][    C2] RIP: 0033:0x7f439756d93b
[ 1780.669350][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1780.669353][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1780.669356][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1780.669358][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1780.669360][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1780.669361][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1780.669363][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1804.656144][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1804.656155][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1804.656158][ C0] softirqs last disabled at (0): 0x0 
| [ 1804.656172][    C0] Tainted: [L]=SOFTLOCKUP
[ 1804.656174][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1804.656177][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1804.656187][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1804.656191][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1804.656194][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1804.656196][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1804.656199][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1804.656201][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1804.656203][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1804.656205][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1804.656208][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1804.656212][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1804.656214][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1804.656216][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1804.656218][    C0] PKRU: 55555554
[ 1804.656219][    C0] Call Trace:
[ 1804.656224][    C0]  <TASK>
[ 1804.656228][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1804.656232][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1804.656238][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1804.656243][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1804.656251][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1804.656254][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1804.656257][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1804.656260][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1804.656268][ C0] xa_store (lib/xarray.c:1734) 
[ 1804.656273][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1804.656279][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1804.656284][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1804.656287][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1804.656290][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1804.656298][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1804.656301][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1804.656309][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1804.656313][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1804.656318][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1804.656326][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1804.656330][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1804.656341][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1804.656345][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1804.656352][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1804.656357][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1804.656361][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1804.656366][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1804.656370][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1804.656373][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1804.656380][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1804.656384][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1804.656391][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1804.656396][    C0] RIP: 0033:0x7f439756d93b
[ 1804.656402][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1804.656404][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1804.656408][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1804.656410][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1804.656412][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1804.656414][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1804.656416][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1804.669124][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1804.669130][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1804.669134][ C1] softirqs last disabled at (0): 0x0 
| [ 1804.669144][    C1] Tainted: [L]=SOFTLOCKUP
[ 1804.669145][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1804.669147][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1804.669152][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1804.669155][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1804.669158][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1804.669160][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1804.669162][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1804.669164][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1804.669167][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1804.669169][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1804.669171][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1804.669181][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1804.669183][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1804.669185][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1804.669186][    C1] PKRU: 55555554
[ 1804.669188][    C1] Call Trace:
[ 1804.669189][    C1]  <TASK>
[ 1804.669192][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1804.669196][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1804.669200][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1804.669204][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1804.669209][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1804.669213][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1804.669216][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1804.669219][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1804.669225][ C1] xa_store (lib/xarray.c:1734) 
[ 1804.669229][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1804.669232][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1804.669238][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1804.669241][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1804.669244][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1804.669248][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1804.669252][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1804.669258][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1804.669262][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1804.669266][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1804.669270][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1804.669275][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1804.669281][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1804.669285][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1804.669291][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1804.669295][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1804.669298][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1804.669302][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1804.669305][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1804.669309][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1804.669314][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1804.669318][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1804.669322][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1804.669325][    C1] RIP: 0033:0x7f439756d93b
[ 1804.669329][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1804.669332][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1804.669335][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1804.669337][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1804.669339][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1804.669341][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1804.669343][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1804.670133][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1804.670140][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1804.670144][ C3] softirqs last disabled at (0): 0x0 
| [ 1804.670155][    C3] Tainted: [L]=SOFTLOCKUP
[ 1804.670156][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1804.670158][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1804.670165][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1804.670167][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1804.670170][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1804.670172][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1804.670174][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1804.670176][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1804.670178][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1804.670180][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1804.670187][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1804.670190][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1804.670192][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1804.670194][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1804.670196][    C3] PKRU: 55555554
[ 1804.670197][    C3] Call Trace:
[ 1804.670200][    C3]  <IRQ>
[ 1804.670202][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1804.670207][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1804.670212][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1804.670215][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1804.670220][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1804.670224][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1804.670228][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1804.670232][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1804.670235][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1804.670238][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1804.670241][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1804.670243][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1804.670246][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1804.670252][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1804.670256][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1804.670259][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1804.670263][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1804.670268][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1804.670272][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1804.670277][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1804.670282][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1804.670289][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1804.670294][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1804.670297][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1804.670300][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1804.670303][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1804.670307][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1804.670310][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1804.670315][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1804.670318][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1804.670321][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1804.670326][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1804.670330][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1804.670333][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1804.670336][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1804.670338][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1804.670342][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1804.670346][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1804.670351][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1804.670354][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1804.670360][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1804.670364][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1804.670367][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1804.670372][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1804.670377][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1804.670382][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1804.670386][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1804.670389][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1804.670394][    C3]  </IRQ>
[ 1804.670395][    C3]  <TASK>
[ 1804.670397][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1804.670401][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1804.670404][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1804.670407][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1804.670409][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1804.670411][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1804.670413][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1804.670415][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1804.670417][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1804.670421][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1804.670426][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1804.670432][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1804.670442][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1804.670446][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1804.670449][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1804.670454][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1804.670456][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1804.670462][ C3] xas_alloc (lib/xarray.c:378) 
[ 1804.670466][ C3] xas_create (lib/xarray.c:685) 
[ 1804.670472][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1804.670476][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1804.670480][ C3] __xa_store (lib/xarray.c:1703) 
[ 1804.670484][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1804.670489][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1804.670492][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1804.670495][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1804.670501][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1804.670505][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1804.670509][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1804.670514][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1804.670516][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1804.670519][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1804.670523][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1804.670527][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1804.670532][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1804.670535][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1804.670540][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1804.670544][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1804.670549][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1804.670558][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1804.670562][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1804.670567][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1804.670571][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1804.670574][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1804.670578][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1804.670580][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1804.670584][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1804.670590][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1804.670594][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1804.670599][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1804.670602][    C3] RIP: 0033:0x7f439756d93b
[ 1804.670605][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1804.670608][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1804.670611][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1804.670613][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1804.670615][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1804.670617][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1804.670618][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1808.669130][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1808.669136][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1808.669140][ C2] softirqs last disabled at (0): 0x0 
| [ 1808.669151][    C2] Tainted: [L]=SOFTLOCKUP
[ 1808.669153][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1808.669155][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1808.669161][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1808.669165][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1808.669167][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1808.669169][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1808.669171][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1808.669173][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1808.669175][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1808.669177][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1808.669179][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1808.669183][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1808.669185][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1808.669187][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1808.669188][    C2] PKRU: 55555554
[ 1808.669190][    C2] Call Trace:
[ 1808.669193][    C2]  <TASK>
[ 1808.669196][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1808.669201][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1808.669205][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1808.669208][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1808.669215][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1808.669222][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1808.669225][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1808.669228][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1808.669234][ C2] xa_store (lib/xarray.c:1734) 
[ 1808.669239][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1808.669243][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1808.669249][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1808.669251][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1808.669254][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1808.669259][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1808.669263][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1808.669269][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1808.669272][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1808.669277][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1808.669282][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1808.669287][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1808.669294][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1808.669298][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1808.669303][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1808.669307][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1808.669311][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1808.669315][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1808.669318][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1808.669322][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1808.669328][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1808.669332][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1808.669337][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1808.669341][    C2] RIP: 0033:0x7f439756d93b
[ 1808.669345][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1808.669348][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1808.669351][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1808.669353][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1808.669355][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1808.669357][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1808.669358][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1828.216527][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 1828.216966][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 1828.217204][    C1] NMI backtrace for cpu 1
| [ 1828.217225][    C1] Tainted: [L]=SOFTLOCKUP
[ 1828.217227][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1828.217230][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1828.217249][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1828.217252][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1828.217257][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1828.217259][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1828.217261][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1828.217263][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1828.217265][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1828.217267][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1828.217269][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1828.217272][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1828.217274][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1828.217276][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1828.217277][    C1] PKRU: 55555554
[ 1828.217279][    C1] Call Trace:
[ 1828.217280][    C1]  <TASK>
[ 1828.217283][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1828.217287][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1828.217293][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1828.217297][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1828.217305][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1828.217308][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1828.217311][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1828.217314][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1828.217321][ C1] xa_store (lib/xarray.c:1734) 
[ 1828.217325][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1828.217330][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1828.217335][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1828.217338][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1828.217340][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1828.217347][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1828.217350][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1828.217358][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1828.217362][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1828.217367][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1828.217373][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1828.217377][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1828.217387][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1828.217390][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1828.217398][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1828.217404][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1828.217408][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1828.217413][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1828.217416][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1828.217421][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1828.217428][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1828.217432][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1828.217439][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1828.217443][    C1] RIP: 0033:0x7f439756d93b
[ 1828.217448][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1828.217450][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1828.217453][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1828.217455][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1828.217457][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1828.217459][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1828.217461][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1828.217459][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 1828.217461][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1828.217466][    C1]  </TASK>
| [ 1828.218207][    C3] Tainted: [L]=SOFTLOCKUP
[ 1828.218209][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1828.218211][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1828.218217][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1828.218223][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1828.218226][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1828.218229][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1828.218231][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1828.218233][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1828.218235][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1828.218237][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1828.218239][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1828.218243][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1828.218245][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1828.218246][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1828.218248][    C3] PKRU: 55555554
[ 1828.218249][    C3] Call Trace:
[ 1828.218251][    C3]  <IRQ>
[ 1828.218252][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1828.218257][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1828.218261][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1828.218265][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1828.218268][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1828.218273][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1828.218276][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1828.218280][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1828.218283][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1828.218286][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1828.218289][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1828.218291][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1828.218295][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1828.218300][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1828.218304][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1828.218307][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1828.218311][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1828.218317][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1828.218323][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1828.218328][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1828.218332][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1828.218338][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1828.218343][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1828.218347][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1828.218350][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1828.218353][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1828.218356][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1828.218359][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1828.218365][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1828.218368][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1828.218371][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1828.218376][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1828.218380][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1828.218384][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1828.218386][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1828.218390][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1828.218393][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1828.218397][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1828.218402][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1828.218405][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1828.218409][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1828.218413][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1828.218417][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1828.218422][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1828.218425][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1828.218431][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1828.218434][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1828.218438][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1828.218441][    C3]  </IRQ>
[ 1828.218442][    C3]  <TASK>
[ 1828.218444][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1828.218447][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1828.218450][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1828.218453][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1828.218456][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1828.218457][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1828.218459][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1828.218461][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1828.218462][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1828.218466][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1828.218472][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1828.218477][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1828.218482][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1828.218487][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1828.218491][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1828.218495][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1828.218498][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1828.218503][ C3] xas_alloc (lib/xarray.c:378) 
[ 1828.218507][ C3] xas_create (lib/xarray.c:685) 
[ 1828.218513][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1828.218517][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1828.218521][ C3] __xa_store (lib/xarray.c:1703) 
[ 1828.218525][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1828.218529][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1828.218532][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1828.218535][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1828.218540][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1828.218544][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1828.218547][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1828.218551][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1828.218554][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1828.218557][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1828.218561][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1828.218564][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1828.218569][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1828.218573][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1828.218578][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1828.218581][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1828.218586][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1828.218593][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1828.218597][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1828.218602][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1828.218607][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1828.218610][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1828.218614][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1828.218616][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1828.218620][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1828.218626][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1828.218630][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1828.218634][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1828.218637][    C3] RIP: 0033:0x7f439756d93b
[ 1828.218642][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1828.218644][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1828.218647][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1828.218648][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1828.218650][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1828.218652][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1828.218653][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1832.656142][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1832.656149][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1832.656153][ C0] softirqs last disabled at (0): 0x0 
| [ 1832.656164][    C0] Tainted: [L]=SOFTLOCKUP
[ 1832.656166][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1832.656168][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1832.656175][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1832.656178][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1832.656181][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1832.656183][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1832.656185][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1832.656187][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1832.656190][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1832.656192][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1832.656196][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1832.656200][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1832.656202][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1832.656204][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1832.656206][    C0] PKRU: 55555554
[ 1832.656207][    C0] Call Trace:
[ 1832.656211][    C0]  <TASK>
[ 1832.656214][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1832.656218][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1832.656224][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1832.656227][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1832.656234][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1832.656238][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1832.656241][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1832.656244][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1832.656250][ C0] xa_store (lib/xarray.c:1734) 
[ 1832.656254][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1832.656259][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1832.656264][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1832.656267][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1832.656270][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1832.656275][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1832.656279][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1832.656285][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1832.656289][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1832.656294][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1832.656299][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1832.656304][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1832.656312][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1832.656317][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1832.656322][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1832.656327][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1832.656330][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1832.656334][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1832.656337][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1832.656341][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1832.656347][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1832.656351][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1832.656356][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1832.656360][    C0] RIP: 0033:0x7f439756d93b
[ 1832.656364][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1832.656367][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1832.656371][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1832.656373][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1832.656374][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1832.656376][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1832.656378][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1836.669134][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1836.669142][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1836.669146][ C2] softirqs last disabled at (0): 0x0 
| [ 1836.669158][    C2] Tainted: [L]=SOFTLOCKUP
[ 1836.669160][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1836.669162][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1836.669170][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1836.669174][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1836.669177][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1836.669179][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1836.669181][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1836.669183][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1836.669185][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1836.669187][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1836.669190][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1836.669194][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1836.669197][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1836.669198][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1836.669200][    C2] PKRU: 55555554
[ 1836.669201][    C2] Call Trace:
[ 1836.669205][    C2]  <TASK>
[ 1836.669208][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1836.669212][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1836.669225][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1836.669229][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1836.669236][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1836.669239][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1836.669242][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1836.669245][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1836.669251][ C2] xa_store (lib/xarray.c:1734) 
[ 1836.669256][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1836.669261][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1836.669266][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1836.669269][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1836.669272][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1836.669278][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1836.669281][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1836.669288][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1836.669292][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1836.669297][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1836.669304][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1836.669308][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1836.669316][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1836.669320][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1836.669326][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1836.669331][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1836.669334][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1836.669339][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1836.669342][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1836.669345][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1836.669352][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1836.669356][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1836.669361][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1836.669365][    C2] RIP: 0033:0x7f439756d93b
[ 1836.669370][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1836.669373][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1836.669376][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1836.669378][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1836.669380][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1836.669382][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1836.669384][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1852.669144][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1852.669154][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1852.669158][ C1] softirqs last disabled at (0): 0x0 
| [ 1852.669179][    C1] Tainted: [L]=SOFTLOCKUP
[ 1852.669181][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1852.669184][ C1] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 1852.669192][ C1] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 1852.669196][    C1] RSP: 0018:ffffc900034b7a10 EFLAGS: 00000202
[ 1852.669199][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1852.669201][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1852.669203][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1852.669206][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1852.669208][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1852.669210][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1852.669213][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1852.669217][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1852.669219][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1852.669220][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1852.669222][    C1] PKRU: 55555554
[ 1852.669224][    C1] Call Trace:
[ 1852.669229][    C1]  <TASK>
[ 1852.669230][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1852.669242][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1852.669246][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1852.669252][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1852.669256][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1852.669264][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1852.669268][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1852.669271][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1852.669274][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1852.669281][ C1] xa_store (lib/xarray.c:1734) 
[ 1852.669286][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1852.669292][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1852.669297][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1852.669300][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1852.669303][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1852.669310][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1852.669314][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1852.669322][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1852.669326][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1852.669332][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1852.669340][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1852.669345][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1852.669354][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1852.669358][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1852.669365][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1852.669370][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1852.669374][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1852.669379][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1852.669383][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1852.669386][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1852.669394][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1852.669398][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1852.669404][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1852.669410][    C1] RIP: 0033:0x7f439756d93b
[ 1852.669415][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1852.669418][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1852.669421][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1852.669424][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1852.669426][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1852.669428][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1852.669430][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1852.670141][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1852.670149][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1852.670153][ C3] softirqs last disabled at (0): 0x0 
| [ 1852.670164][    C3] Tainted: [L]=SOFTLOCKUP
[ 1852.670165][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1852.670167][ C3] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1852.670174][ C3] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 1852.670177][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1852.670180][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1852.670182][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1852.670184][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1852.670186][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1852.670188][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1852.670190][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1852.670192][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1852.670196][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1852.670198][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1852.670200][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1852.670201][    C3] PKRU: 55555554
[ 1852.670202][    C3] Call Trace:
[ 1852.670206][    C3]  <IRQ>
[ 1852.670208][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1852.670213][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1852.670218][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1852.670221][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1852.670226][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1852.670230][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1852.670233][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1852.670238][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1852.670241][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1852.670244][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1852.670246][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1852.670249][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1852.670252][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1852.670258][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1852.670262][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1852.670265][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1852.670269][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1852.670274][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1852.670279][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1852.670284][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1852.670288][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1852.670294][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1852.670299][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1852.670302][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1852.670305][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1852.670308][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1852.670312][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1852.670315][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1852.670320][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1852.670323][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1852.670326][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1852.670331][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1852.670335][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1852.670338][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1852.670341][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1852.670344][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1852.670347][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1852.670352][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1852.670356][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1852.670359][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1852.670364][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1852.670368][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1852.670371][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1852.670376][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1852.670381][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1852.670386][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1852.670390][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1852.670393][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1852.670397][    C3]  </IRQ>
[ 1852.670398][    C3]  <TASK>
[ 1852.670400][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1852.670404][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1852.670408][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1852.670410][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1852.670413][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1852.670415][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1852.670417][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1852.670419][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1852.670422][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1852.670426][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1852.670431][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1852.670437][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1852.670441][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1852.670445][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1852.670448][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1852.670452][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1852.670455][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1852.670460][ C3] xas_alloc (lib/xarray.c:378) 
[ 1852.670464][ C3] xas_create (lib/xarray.c:685) 
[ 1852.670470][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1852.670475][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1852.670478][ C3] __xa_store (lib/xarray.c:1703) 
[ 1852.670483][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1852.670487][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1852.670490][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1852.670493][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1852.670498][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1852.670502][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1852.670505][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1852.670510][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1852.670513][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1852.670516][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1852.670520][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1852.670523][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1852.670528][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1852.670532][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1852.670537][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1852.670540][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1852.670545][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1852.670553][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1852.670557][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1852.670562][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1852.670567][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1852.670570][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1852.670574][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1852.670576][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1852.670580][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1852.670586][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1852.670590][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1852.670595][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1852.670599][    C3] RIP: 0033:0x7f439756d93b
[ 1852.670603][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1852.670605][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1852.670608][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1852.670610][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1852.670612][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1852.670614][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1852.670617][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1860.656138][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1860.656146][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1860.656150][ C0] softirqs last disabled at (0): 0x0 
| [ 1860.656163][    C0] Tainted: [L]=SOFTLOCKUP
[ 1860.656164][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1860.656167][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1860.656175][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1860.656178][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1860.656181][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1860.656184][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1860.656186][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1860.656188][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1860.656190][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1860.656192][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1860.656195][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1860.656200][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1860.656202][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1860.656203][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1860.656205][    C0] PKRU: 55555554
[ 1860.656207][    C0] Call Trace:
[ 1860.656211][    C0]  <TASK>
[ 1860.656215][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1860.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1860.656224][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1860.656228][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1860.656234][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1860.656239][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1860.656242][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1860.656245][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1860.656251][ C0] xa_store (lib/xarray.c:1734) 
[ 1860.656256][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1860.656262][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1860.656268][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1860.656271][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1860.656274][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1860.656280][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1860.656284][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1860.656291][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1860.656295][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1860.656300][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1860.656307][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1860.656312][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1860.656321][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1860.656325][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1860.656331][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1860.656336][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1860.656340][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1860.656344][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1860.656348][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1860.656351][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1860.656358][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1860.656362][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1860.656367][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1860.656372][    C0] RIP: 0033:0x7f439756d93b
[ 1860.656377][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1860.656380][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1860.656383][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1860.656385][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1860.656388][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1860.656390][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1860.656392][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1864.669136][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1864.669144][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1864.669148][ C2] softirqs last disabled at (0): 0x0 
| [ 1864.669159][    C2] Tainted: [L]=SOFTLOCKUP
[ 1864.669161][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1864.669163][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1864.669171][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1864.669174][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1864.669177][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1864.669179][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1864.669182][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1864.669183][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1864.669185][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1864.669187][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1864.669190][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1864.669194][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1864.669197][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1864.669198][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1864.669200][    C2] PKRU: 55555554
[ 1864.669202][    C2] Call Trace:
[ 1864.669206][    C2]  <TASK>
[ 1864.669209][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1864.669213][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1864.669218][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1864.669222][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1864.669230][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1864.669234][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1864.669237][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1864.669240][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1864.669246][ C2] xa_store (lib/xarray.c:1734) 
[ 1864.669251][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1864.669256][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1864.669262][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1864.669265][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1864.669268][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1864.669273][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1864.669277][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1864.669284][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1864.669288][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1864.669293][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1864.669299][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1864.669304][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1864.669312][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1864.669316][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1864.669322][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1864.669327][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1864.669331][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1864.669336][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1864.669339][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1864.669343][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1864.669349][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1864.669353][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1864.669359][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1864.669363][    C2] RIP: 0033:0x7f439756d93b
[ 1864.669368][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1864.669371][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1864.669374][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1864.669376][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1864.669378][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1864.669380][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1864.669382][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1880.669142][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1880.669152][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1880.669156][ C1] softirqs last disabled at (0): 0x0 
| [ 1880.669170][    C1] Tainted: [L]=SOFTLOCKUP
[ 1880.669171][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1880.669174][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1880.669184][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1880.669188][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1880.669191][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1880.669194][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1880.669196][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1880.669198][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1880.669200][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1880.669201][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1880.669204][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1880.669208][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1880.669210][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1880.669212][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1880.669214][    C1] PKRU: 55555554
[ 1880.669215][    C1] Call Trace:
[ 1880.669219][    C1]  <TASK>
[ 1880.669222][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1880.669226][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1880.669232][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1880.669236][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1880.669244][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1880.669247][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1880.669250][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1880.669253][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1880.669260][ C1] xa_store (lib/xarray.c:1734) 
[ 1880.669265][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1880.669271][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1880.669277][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1880.669279][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1880.669282][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1880.669289][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1880.669293][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1880.669301][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1880.669305][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1880.669310][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1880.669317][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1880.669321][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1880.669331][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1880.669335][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1880.669342][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1880.669347][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1880.669350][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1880.669356][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1880.669359][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1880.669363][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1880.669370][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1880.669374][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1880.669380][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1880.669385][    C1] RIP: 0033:0x7f439756d93b
[ 1880.669390][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1880.669392][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1880.669396][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1880.669398][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1880.669400][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1880.669402][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1880.669404][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1880.670131][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1880.670140][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1880.670143][ C3] softirqs last disabled at (0): 0x0 
| [ 1880.670155][    C3] Tainted: [L]=SOFTLOCKUP
[ 1880.670156][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1880.670158][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 1880.670164][ C3] Code: 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff <5b> b8 01 00 00 00 5d 41 5c c3 cc cc cc cc 41 bc 08 00 00 00 45 29
All code
========
   0:	00 74 f2 48          	add    %dh,0x48(%rdx,%rsi,8)
   4:	89 c2                	mov    %eax,%edx
   6:	b8 01 00 00 00       	mov    $0x1,%eax
   b:	48 85 d2             	test   %rdx,%rdx
   e:	0f 84 4c ff ff ff    	je     0xffffffffffffff60
  14:	41 83 e2 07          	and    $0x7,%r10d
  18:	49 39 d1             	cmp    %rdx,%r9
  1b:	0f 85 34 ff ff ff    	jne    0xffffffffffffff55
  21:	45 3a 11             	cmp    (%r9),%r10b
  24:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff55
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	b8 01 00 00 00       	mov    $0x1,%eax
  30:	5d                   	pop    %rbp
  31:	41 5c                	pop    %r12
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  3e:	45                   	rex.RB
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	b8 01 00 00 00       	mov    $0x1,%eax
   6:	5d                   	pop    %rbp
   7:	41 5c                	pop    %r12
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  14:	45                   	rex.RB
  15:	29                   	.byte 0x29
[ 1880.670167][    C3] RSP: 0018:ffffc90000270a28 EFLAGS: 00000246
[ 1880.670170][    C3] RAX: fffffbfff77dcb81 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 1880.670172][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1880.670174][    C3] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1880.670176][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1880.670178][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1880.670180][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1880.670183][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1880.670187][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1880.670189][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1880.670197][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1880.670199][    C3] PKRU: 55555554
[ 1880.670201][    C3] Call Trace:
[ 1880.670204][    C3]  <IRQ>
[ 1880.670208][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1880.670215][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1880.670219][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1880.670223][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1880.670227][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1880.670232][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1880.670236][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1880.670239][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1880.670244][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1880.670247][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1880.670250][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1880.670253][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1880.670255][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1880.670258][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1880.670264][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1880.670268][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1880.670271][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1880.670275][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1880.670280][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1880.670284][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1880.670290][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1880.670295][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1880.670301][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1880.670306][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1880.670309][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1880.670312][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1880.670316][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1880.670319][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1880.670322][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1880.670328][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1880.670330][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1880.670333][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1880.670338][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1880.670342][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1880.670346][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1880.670348][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1880.670352][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1880.670355][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1880.670359][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1880.670364][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1880.670367][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1880.670372][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1880.670376][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1880.670382][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1880.670387][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1880.670391][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1880.670397][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1880.670401][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1880.670405][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1880.670409][    C3]  </IRQ>
[ 1880.670410][    C3]  <TASK>
[ 1880.670412][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1880.670416][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1880.670420][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1880.670423][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1880.670426][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1880.670428][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1880.670429][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1880.670431][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1880.670433][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1880.670437][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1880.670443][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1880.670448][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1880.670452][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1880.670457][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1880.670459][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1880.670464][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1880.670466][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1880.670472][ C3] xas_alloc (lib/xarray.c:378) 
[ 1880.670476][ C3] xas_create (lib/xarray.c:685) 
[ 1880.670482][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1880.670487][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1880.670491][ C3] __xa_store (lib/xarray.c:1703) 
[ 1880.670495][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1880.670500][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1880.670503][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1880.670505][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1880.670510][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1880.670515][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1880.670518][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1880.670523][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1880.670525][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1880.670528][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1880.670532][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1880.670536][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1880.670541][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1880.670545][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1880.670549][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1880.670553][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1880.670558][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1880.670567][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1880.670571][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1880.670577][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1880.670581][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1880.670584][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1880.670588][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1880.670591][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1880.670594][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1880.670601][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1880.670604][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1880.670609][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1880.670613][    C3] RIP: 0033:0x7f439756d93b
[ 1880.670616][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1880.670619][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1880.670622][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1880.670624][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1880.670625][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1880.670627][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1880.670629][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1888.656144][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1888.656153][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1888.656157][ C0] softirqs last disabled at (0): 0x0 
| [ 1888.656171][    C0] Tainted: [L]=SOFTLOCKUP
[ 1888.656173][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1888.656175][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1888.656184][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1888.656188][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1888.656191][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1888.656194][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1888.656196][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1888.656198][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1888.656200][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1888.656202][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1888.656205][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1888.656210][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1888.656212][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1888.656213][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1888.656215][    C0] PKRU: 55555554
[ 1888.656216][    C0] Call Trace:
[ 1888.656221][    C0]  <TASK>
[ 1888.656235][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1888.656240][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1888.656245][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1888.656250][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1888.656258][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1888.656263][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1888.656266][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1888.656269][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1888.656276][ C0] xa_store (lib/xarray.c:1734) 
[ 1888.656281][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1888.656287][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1888.656292][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1888.656295][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1888.656298][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1888.656305][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1888.656309][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1888.656317][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1888.656321][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1888.656326][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1888.656333][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1888.656338][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1888.656348][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1888.656352][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1888.656359][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1888.656364][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1888.656367][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1888.656372][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1888.656376][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1888.656380][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1888.656387][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1888.656391][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1888.656397][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1888.656402][    C0] RIP: 0033:0x7f439756d93b
[ 1888.656408][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1888.656411][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1888.656414][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1888.656417][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1888.656419][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1888.656421][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1888.656423][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1892.669135][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1892.669143][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1892.669147][ C2] softirqs last disabled at (0): 0x0 
| [ 1892.669158][    C2] Tainted: [L]=SOFTLOCKUP
[ 1892.669160][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1892.669162][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1892.669170][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1892.669173][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1892.669176][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1892.669178][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1892.669181][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1892.669182][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1892.669185][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1892.669186][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1892.669189][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1892.669193][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1892.669195][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1892.669197][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1892.669198][    C2] PKRU: 55555554
[ 1892.669200][    C2] Call Trace:
[ 1892.669203][    C2]  <TASK>
[ 1892.669208][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1892.669212][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1892.669218][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1892.669222][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1892.669228][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1892.669232][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1892.669235][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1892.669238][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1892.669245][ C2] xa_store (lib/xarray.c:1734) 
[ 1892.669249][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1892.669255][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1892.669260][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1892.669263][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1892.669266][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1892.669272][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1892.669275][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1892.669282][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1892.669287][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1892.669291][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1892.669298][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1892.669302][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1892.669311][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1892.669314][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1892.669320][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1892.669325][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1892.669329][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1892.669333][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1892.669336][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1892.669340][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1892.669346][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1892.669350][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1892.669355][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1892.669360][    C2] RIP: 0033:0x7f439756d93b
[ 1892.669366][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1892.669369][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1892.669372][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1892.669374][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1892.669376][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1892.669378][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1892.669380][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1906.230456][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 1906.230728][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 1906.231140][    C1] NMI backtrace for cpu 1
| [ 1906.231161][    C1] Tainted: [L]=SOFTLOCKUP
[ 1906.231163][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1906.231166][ C1] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 1906.231176][ C1] Code: ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 <49> 01 c1 48 89 e8 49 8d 59 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	7f ff                	jg     0x3
   4:	ff 48 39             	decl   0x39(%rax)
   7:	c7                   	(bad)
   8:	76 dd                	jbe    0xffffffffffffffe7
   a:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df 
  1c:	4d 89 d1             	mov    %r10,%r9
  1f:	48 c1 ed 03          	shr    $0x3,%rbp
  23:	49 c1 e9 03          	shr    $0x3,%r9
  27:	48 01 c5             	add    %rax,%rbp
  2a:*	49 01 c1             	add    %rax,%r9		<-- trapping instruction
  2d:	48 89 e8             	mov    %rbp,%rax
  30:	49 8d 59 01          	lea    0x1(%r9),%rbx
  34:	48 89 da             	mov    %rbx,%rdx
  37:	48 29 ea             	sub    %rbp,%rdx
  3a:	48 83 fa 10          	cmp    $0x10,%rdx
  3e:	0f                   	.byte 0xf
  3f:	8e                   	.byte 0x8e

Code starting with the faulting instruction
===========================================
   0:	49 01 c1             	add    %rax,%r9
   3:	48 89 e8             	mov    %rbp,%rax
   6:	49 8d 59 01          	lea    0x1(%r9),%rbx
   a:	48 89 da             	mov    %rbx,%rdx
   d:	48 29 ea             	sub    %rbp,%rdx
  10:	48 83 fa 10          	cmp    $0x10,%rdx
  14:	0f                   	.byte 0xf
  15:	8e                   	.byte 0x8e
[ 1906.231179][    C1] RSP: 0018:ffffc900034b79f8 EFLAGS: 00000282
[ 1906.231184][    C1] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1906.231186][    C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1906.231189][    C1] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: 1ffffffff77dcb80
[ 1906.231191][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1906.231193][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1906.231195][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1906.231197][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1906.231201][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1906.231203][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1906.231205][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1906.231206][    C1] PKRU: 55555554
[ 1906.231208][    C1] Call Trace:
[ 1906.231212][    C1]  <TASK>
[ 1906.231216][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1906.231225][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1906.231229][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1906.231234][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1906.231238][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1906.231246][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1906.231249][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1906.231252][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1906.231255][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1906.231262][ C1] xa_store (lib/xarray.c:1734) 
[ 1906.231267][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1906.231273][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1906.231278][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1906.231281][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1906.231284][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1906.231290][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1906.231294][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1906.231302][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1906.231306][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1906.231311][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1906.231318][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1906.231323][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1906.231333][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1906.231338][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1906.231344][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1906.231352][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1906.231356][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1906.231361][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1906.231364][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1906.231368][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1906.231375][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1906.231379][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1906.231385][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1906.231390][    C1] RIP: 0033:0x7f439756d93b
[ 1906.231396][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1906.231399][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1906.231402][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1906.231404][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1906.231407][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1906.231409][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1906.231411][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1906.231409][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 1906.231411][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1906.231416][    C1]  </TASK>
| [ 1906.232143][    C3] Tainted: [L]=SOFTLOCKUP
[ 1906.232144][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1906.232146][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1906.232154][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1906.232157][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1906.232161][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1906.232163][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1906.232165][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1906.232167][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1906.232169][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1906.232172][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1906.232174][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1906.232178][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1906.232180][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1906.232182][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1906.232183][    C3] PKRU: 55555554
[ 1906.232185][    C3] Call Trace:
[ 1906.232187][    C3]  <IRQ>
[ 1906.232188][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1906.232193][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1906.232197][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1906.232201][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1906.232204][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1906.232209][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1906.232213][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1906.232217][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1906.232220][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1906.232223][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1906.232226][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1906.232228][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1906.232231][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1906.232237][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1906.232241][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1906.232243][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1906.232246][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1906.232252][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1906.232255][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1906.232261][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1906.232265][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1906.232271][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1906.232276][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1906.232279][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1906.232282][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1906.232285][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1906.232288][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1906.232291][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1906.232297][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1906.232300][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1906.232303][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1906.232307][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1906.232311][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1906.232314][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1906.232317][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1906.232321][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1906.232324][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1906.232328][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1906.232333][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1906.232335][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1906.232340][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1906.232345][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1906.232348][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1906.232353][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1906.232357][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1906.232362][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1906.232366][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1906.232369][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1906.232373][    C3]  </IRQ>
[ 1906.232374][    C3]  <TASK>
[ 1906.232375][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1906.232379][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1906.232382][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1906.232385][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1906.232387][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1906.232389][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1906.232390][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1906.232392][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1906.232394][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1906.232398][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1906.232403][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1906.232408][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1906.232412][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1906.232416][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1906.232419][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1906.232423][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1906.232426][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1906.232431][ C3] xas_alloc (lib/xarray.c:378) 
[ 1906.232435][ C3] xas_create (lib/xarray.c:685) 
[ 1906.232441][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1906.232445][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1906.232449][ C3] __xa_store (lib/xarray.c:1703) 
[ 1906.232453][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1906.232457][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1906.232460][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1906.232463][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1906.232468][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1906.232472][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1906.232475][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1906.232480][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1906.232483][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1906.232485][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1906.232489][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1906.232493][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1906.232498][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1906.232502][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1906.232506][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1906.232510][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1906.232514][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1906.232521][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1906.232525][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1906.232530][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1906.232535][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1906.232538][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1906.232542][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1906.232544][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1906.232548][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1906.232554][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1906.232558][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1906.232563][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1906.232566][    C3] RIP: 0033:0x7f439756d93b
[ 1906.232570][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1906.232573][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1906.232576][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1906.232578][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1906.232579][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1906.232581][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1906.232583][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1916.656145][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1916.656155][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1916.656159][ C0] softirqs last disabled at (0): 0x0 
| [ 1916.656173][    C0] Tainted: [L]=SOFTLOCKUP
[ 1916.656175][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1916.656178][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1916.656188][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1916.656192][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1916.656196][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1916.656198][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1916.656201][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1916.656203][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1916.656205][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1916.656207][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1916.656210][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1916.656214][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1916.656216][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1916.656218][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1916.656220][    C0] PKRU: 55555554
[ 1916.656221][    C0] Call Trace:
[ 1916.656226][    C0]  <TASK>
[ 1916.656231][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1916.656235][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1916.656241][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1916.656246][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1916.656254][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1916.656258][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1916.656261][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1916.656264][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1916.656272][ C0] xa_store (lib/xarray.c:1734) 
[ 1916.656277][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1916.656283][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1916.656288][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1916.656292][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1916.656295][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1916.656302][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1916.656306][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1916.656313][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1916.656317][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1916.656322][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1916.656329][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1916.656334][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1916.656344][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1916.656348][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1916.656355][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1916.656360][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1916.656363][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1916.656368][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1916.656372][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1916.656375][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1916.656383][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1916.656387][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1916.656393][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1916.656399][    C0] RIP: 0033:0x7f439756d93b
[ 1916.656405][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1916.656407][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1916.656411][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1916.656413][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1916.656415][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1916.656417][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1916.656419][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1920.669134][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1920.669142][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1920.669146][ C2] softirqs last disabled at (0): 0x0 
| [ 1920.669158][    C2] Tainted: [L]=SOFTLOCKUP
[ 1920.669160][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1920.669162][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 1920.669168][ C2] Code: 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff <5b> b8 01 00 00 00 5d 41 5c c3 cc cc cc cc 41 bc 08 00 00 00 45 29
All code
========
   0:	00 74 f2 48          	add    %dh,0x48(%rdx,%rsi,8)
   4:	89 c2                	mov    %eax,%edx
   6:	b8 01 00 00 00       	mov    $0x1,%eax
   b:	48 85 d2             	test   %rdx,%rdx
   e:	0f 84 4c ff ff ff    	je     0xffffffffffffff60
  14:	41 83 e2 07          	and    $0x7,%r10d
  18:	49 39 d1             	cmp    %rdx,%r9
  1b:	0f 85 34 ff ff ff    	jne    0xffffffffffffff55
  21:	45 3a 11             	cmp    (%r9),%r10b
  24:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff55
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	b8 01 00 00 00       	mov    $0x1,%eax
  30:	5d                   	pop    %rbp
  31:	41 5c                	pop    %r12
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  3e:	45                   	rex.RB
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	b8 01 00 00 00       	mov    $0x1,%eax
   6:	5d                   	pop    %rbp
   7:	41 5c                	pop    %r12
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  14:	45                   	rex.RB
  15:	29                   	.byte 0x29
[ 1920.669172][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000246
[ 1920.669175][    C2] RAX: fffffbfff77dcb81 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 1920.669177][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1920.669179][    C2] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1920.669182][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1920.669184][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1920.669186][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1920.669188][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1920.669192][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1920.669194][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1920.669196][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1920.669198][    C2] PKRU: 55555554
[ 1920.669200][    C2] Call Trace:
[ 1920.669203][    C2]  <TASK>
[ 1920.669207][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1920.669215][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1920.669218][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1920.669223][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1920.669227][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1920.669234][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1920.669237][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1920.669240][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1920.669243][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1920.669249][ C2] xa_store (lib/xarray.c:1734) 
[ 1920.669254][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1920.669259][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1920.669264][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1920.669267][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1920.669270][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1920.669276][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1920.669279][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1920.669286][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1920.669290][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1920.669295][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1920.669301][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1920.669306][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1920.669314][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1920.669317][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1920.669323][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1920.669328][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1920.669331][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1920.669336][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1920.669339][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1920.669343][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1920.669349][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1920.669353][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1920.669359][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1920.669363][    C2] RIP: 0033:0x7f439756d93b
[ 1920.669368][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1920.669370][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1920.669373][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1920.669376][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1920.669377][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1920.669379][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1920.669381][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1932.669153][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1932.669163][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1932.669167][ C1] softirqs last disabled at (0): 0x0 
| [ 1932.669182][    C1] Tainted: [L]=SOFTLOCKUP
[ 1932.669183][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1932.669186][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1932.669197][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1932.669200][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1932.669204][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1932.669206][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1932.669208][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1932.669210][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1932.669213][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1932.669215][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1932.669218][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1932.669222][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1932.669224][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1932.669225][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1932.669227][    C1] PKRU: 55555554
[ 1932.669229][    C1] Call Trace:
[ 1932.669237][    C1]  <TASK>
[ 1932.669241][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1932.669245][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1932.669251][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1932.669255][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1932.669263][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1932.669267][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1932.669270][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1932.669273][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1932.669280][ C1] xa_store (lib/xarray.c:1734) 
[ 1932.669287][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1932.669293][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1932.669298][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1932.669301][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1932.669304][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1932.669311][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1932.669315][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1932.669323][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1932.669327][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1932.669332][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1932.669340][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1932.669345][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1932.669355][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1932.669359][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1932.669366][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1932.669371][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1932.669375][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1932.669380][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1932.669383][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1932.669387][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1932.669395][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1932.669399][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1932.669405][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1932.669410][    C1] RIP: 0033:0x7f439756d93b
[ 1932.669415][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1932.669418][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1932.669422][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1932.669424][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1932.669426][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1932.669428][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1932.669430][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1932.670136][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1932.670144][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1932.670148][ C3] softirqs last disabled at (0): 0x0 
| [ 1932.670160][    C3] Tainted: [L]=SOFTLOCKUP
[ 1932.670162][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1932.670165][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1932.670173][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1932.670175][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1932.670178][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1932.670181][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1932.670183][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1932.670185][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1932.670187][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1932.670189][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1932.670192][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1932.670195][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1932.670198][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1932.670199][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1932.670201][    C3] PKRU: 55555554
[ 1932.670202][    C3] Call Trace:
[ 1932.670206][    C3]  <IRQ>
[ 1932.670207][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1932.670214][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1932.670219][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1932.670222][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1932.670226][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1932.670231][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1932.670234][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1932.670238][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1932.670242][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1932.670245][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1932.670248][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1932.670251][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1932.670254][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1932.670259][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1932.670264][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1932.670266][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1932.670270][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1932.670275][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1932.670280][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1932.670285][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1932.670290][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1932.670296][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1932.670301][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1932.670304][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1932.670307][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1932.670311][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1932.670314][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1932.670317][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1932.670324][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1932.670327][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1932.670330][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1932.670334][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1932.670339][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1932.670342][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1932.670345][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1932.670348][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1932.670352][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1932.670356][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1932.670361][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1932.670364][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1932.670369][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1932.670373][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1932.670377][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1932.670382][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1932.670386][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1932.670392][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1932.670396][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1932.670400][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1932.670404][    C3]  </IRQ>
[ 1932.670405][    C3]  <TASK>
[ 1932.670407][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1932.670412][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1932.670415][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1932.670418][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1932.670421][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1932.670423][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1932.670425][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1932.670427][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1932.670429][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1932.670433][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1932.670438][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1932.670444][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1932.670448][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1932.670452][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1932.670455][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1932.670460][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1932.670462][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1932.670467][ C3] xas_alloc (lib/xarray.c:378) 
[ 1932.670472][ C3] xas_create (lib/xarray.c:685) 
[ 1932.670478][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1932.670482][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1932.670486][ C3] __xa_store (lib/xarray.c:1703) 
[ 1932.670491][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1932.670495][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1932.670498][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1932.670501][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1932.670506][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1932.670510][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1932.670513][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1932.670518][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1932.670521][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1932.670524][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1932.670528][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1932.670531][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1932.670536][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1932.670540][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1932.670545][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1932.670549][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1932.670553][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1932.670561][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1932.670565][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1932.670570][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1932.670574][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1932.670578][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1932.670581][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1932.670584][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1932.670588][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1932.670594][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1932.670598][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1932.670604][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1932.670608][    C3] RIP: 0033:0x7f439756d93b
[ 1932.670612][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1932.670614][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1932.670617][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1932.670619][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1932.670621][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1932.670623][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1932.670625][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1944.656143][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1944.656153][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1944.656157][ C0] softirqs last disabled at (0): 0x0 
| [ 1944.656170][    C0] Tainted: [L]=SOFTLOCKUP
[ 1944.656172][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1944.656175][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1944.656185][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1944.656188][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1944.656192][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1944.656194][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1944.656196][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1944.656198][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1944.656201][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1944.656203][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1944.656205][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1944.656211][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1944.656213][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1944.656215][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1944.656217][    C0] PKRU: 55555554
[ 1944.656219][    C0] Call Trace:
[ 1944.656223][    C0]  <TASK>
[ 1944.656228][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1944.656232][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1944.656238][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1944.656242][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1944.656250][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1944.656255][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1944.656258][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1944.656261][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1944.656268][ C0] xa_store (lib/xarray.c:1734) 
[ 1944.656273][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1944.656279][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1944.656284][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1944.656287][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1944.656291][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1944.656297][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1944.656301][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1944.656309][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1944.656313][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1944.656318][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1944.656325][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1944.656330][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1944.656339][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1944.656343][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1944.656350][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1944.656354][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1944.656358][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1944.656363][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1944.656366][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1944.656370][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1944.656377][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1944.656381][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1944.656387][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1944.656393][    C0] RIP: 0033:0x7f439756d93b
[ 1944.656406][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1944.656409][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1944.656413][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1944.656415][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1944.656417][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1944.656419][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1944.656421][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1948.669136][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1948.669144][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1948.669148][ C2] softirqs last disabled at (0): 0x0 
| [ 1948.669161][    C2] Tainted: [L]=SOFTLOCKUP
[ 1948.669162][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1948.669165][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1948.669173][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1948.669176][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1948.669179][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1948.669181][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1948.669183][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1948.669185][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1948.669187][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1948.669189][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1948.669192][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1948.669196][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1948.669198][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1948.669200][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1948.669202][    C2] PKRU: 55555554
[ 1948.669203][    C2] Call Trace:
[ 1948.669207][    C2]  <TASK>
[ 1948.669211][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1948.669215][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1948.669221][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1948.669225][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1948.669231][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1948.669235][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1948.669238][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1948.669241][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1948.669248][ C2] xa_store (lib/xarray.c:1734) 
[ 1948.669252][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1948.669258][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1948.669263][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1948.669266][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1948.669269][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1948.669275][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1948.669279][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1948.669285][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1948.669289][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1948.669294][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1948.669300][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1948.669305][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1948.669314][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1948.669318][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1948.669323][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1948.669328][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1948.669332][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1948.669337][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1948.669340][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1948.669343][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1948.669350][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1948.669354][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1948.669359][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1948.669364][    C2] RIP: 0033:0x7f439756d93b
[ 1948.669369][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1948.669371][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1948.669374][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1948.669376][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1948.669378][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1948.669380][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1948.669382][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1960.669144][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1960.669155][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1960.669159][ C1] softirqs last disabled at (0): 0x0 
| [ 1960.669173][    C1] Tainted: [L]=SOFTLOCKUP
[ 1960.669175][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1960.669177][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 1960.669184][ C1] Code: 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff 5b b8 01 00 00 00 5d 41 5c <c3> cc cc cc cc 41 bc 08 00 00 00 45 29 dc 49 8d 14 2c eb 0c 48 83
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	48 85 d2             	test   %rdx,%rdx
   5:	0f 84 4c ff ff ff    	je     0xffffffffffffff57
   b:	41 83 e2 07          	and    $0x7,%r10d
   f:	49 39 d1             	cmp    %rdx,%r9
  12:	0f 85 34 ff ff ff    	jne    0xffffffffffffff4c
  18:	45 3a 11             	cmp    (%r9),%r10b
  1b:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff4c
  21:	5b                   	pop    %rbx
  22:	b8 01 00 00 00       	mov    $0x1,%eax
  27:	5d                   	pop    %rbp
  28:	41 5c                	pop    %r12
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  35:	45 29 dc             	sub    %r11d,%r12d
  38:	49 8d 14 2c          	lea    (%r12,%rbp,1),%rdx
  3c:	eb 0c                	jmp    0x4a
  3e:	48                   	rex.W
  3f:	83                   	.byte 0x83

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	41 bc 08 00 00 00    	mov    $0x8,%r12d
   b:	45 29 dc             	sub    %r11d,%r12d
   e:	49 8d 14 2c          	lea    (%r12,%rbp,1),%rdx
  12:	eb 0c                	jmp    0x20
  14:	48                   	rex.W
  15:	83                   	.byte 0x83
[ 1960.669188][    C1] RSP: 0018:ffffc900034b7a10 EFLAGS: 00000246
[ 1960.669191][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1960.669193][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1960.669195][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1960.669198][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1960.669200][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1960.669202][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1960.669205][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1960.669210][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1960.669213][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1960.669214][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1960.669216][    C1] PKRU: 55555554
[ 1960.669217][    C1] Call Trace:
[ 1960.669222][    C1]  <TASK>
[ 1960.669224][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 1960.669236][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1960.669239][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1960.669245][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1960.669249][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1960.669257][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1960.669261][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1960.669264][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1960.669267][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1960.669274][ C1] xa_store (lib/xarray.c:1734) 
[ 1960.669279][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1960.669285][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1960.669291][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1960.669294][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1960.669297][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1960.669304][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1960.669307][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1960.669315][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1960.669319][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1960.669324][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1960.669331][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1960.669336][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1960.669346][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1960.669350][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1960.669357][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1960.669362][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1960.669365][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1960.669375][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1960.669379][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1960.669382][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1960.669390][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1960.669394][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1960.669400][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1960.669405][    C1] RIP: 0033:0x7f439756d93b
[ 1960.669411][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1960.669414][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1960.669418][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1960.669420][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1960.669422][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1960.669424][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1960.669426][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1960.670131][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1960.670139][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1960.670142][ C3] softirqs last disabled at (0): 0x0 
| [ 1960.670154][    C3] Tainted: [L]=SOFTLOCKUP
[ 1960.670155][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1960.670157][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1960.670165][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1960.670168][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1960.670171][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1960.670173][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1960.670175][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1960.670177][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1960.670179][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1960.670181][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1960.670184][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1960.670187][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1960.670189][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1960.670191][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1960.670193][    C3] PKRU: 55555554
[ 1960.670194][    C3] Call Trace:
[ 1960.670198][    C3]  <IRQ>
[ 1960.670199][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1960.670204][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1960.670210][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1960.670213][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1960.670218][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1960.670222][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1960.670225][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1960.670229][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1960.670233][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1960.670236][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1960.670238][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1960.670241][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1960.670244][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1960.670249][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1960.670253][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1960.670256][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1960.670260][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1960.670265][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1960.670269][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1960.670274][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1960.670279][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1960.670285][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1960.670290][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1960.670293][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1960.670296][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1960.670300][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1960.670303][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1960.670306][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1960.670312][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1960.670315][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1960.670318][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1960.670323][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1960.670327][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1960.670331][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1960.670333][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1960.670336][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1960.670340][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1960.670344][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1960.670349][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1960.670351][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1960.670357][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1960.670361][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1960.670365][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1960.670369][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1960.670373][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1960.670379][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1960.670382][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1960.670386][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1960.670390][    C3]  </IRQ>
[ 1960.670391][    C3]  <TASK>
[ 1960.670392][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1960.670397][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1960.670400][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1960.670402][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1960.670405][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1960.670407][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1960.670408][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1960.670410][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1960.670412][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1960.670416][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1960.670421][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1960.670427][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1960.670431][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1960.670435][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1960.670438][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1960.670442][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1960.670445][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1960.670450][ C3] xas_alloc (lib/xarray.c:378) 
[ 1960.670455][ C3] xas_create (lib/xarray.c:685) 
[ 1960.670460][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1960.670465][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1960.670469][ C3] __xa_store (lib/xarray.c:1703) 
[ 1960.670473][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1960.670478][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1960.670481][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1960.670484][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1960.670489][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1960.670493][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1960.670496][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1960.670501][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1960.670504][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1960.670506][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1960.670511][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1960.670514][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1960.670519][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1960.670522][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1960.670527][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1960.670531][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1960.670535][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1960.670543][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1960.670547][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1960.670553][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1960.670557][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1960.670560][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1960.670564][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1960.670567][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1960.670570][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1960.670576][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1960.670580][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1960.670586][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1960.670589][    C3] RIP: 0033:0x7f439756d93b
[ 1960.670593][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1960.670595][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1960.670598][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1960.670600][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1960.670602][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1960.670604][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1960.670606][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1972.656143][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1972.656152][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1972.656156][ C0] softirqs last disabled at (0): 0x0 
| [ 1972.656170][    C0] Tainted: [L]=SOFTLOCKUP
[ 1972.656172][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1972.656174][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1972.656183][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1972.656187][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 1972.656190][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1972.656193][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1972.656195][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1972.656197][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 1972.656199][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 1972.656201][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 1972.656204][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1972.656210][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 1972.656212][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1972.656214][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1972.656215][    C0] PKRU: 55555554
[ 1972.656217][    C0] Call Trace:
[ 1972.656222][    C0]  <TASK>
[ 1972.656226][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1972.656230][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1972.656236][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1972.656240][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1972.656248][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1972.656253][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1972.656256][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1972.656259][ C0] ? xa_store (lib/xarray.c:1734) 
[ 1972.656266][ C0] xa_store (lib/xarray.c:1734) 
[ 1972.656270][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1972.656276][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1972.656282][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1972.656285][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1972.656288][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1972.656295][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1972.656299][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1972.656306][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1972.656310][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1972.656316][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1972.656323][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 1972.656327][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1972.656336][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1972.656341][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 1972.656347][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 1972.656352][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1972.656356][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1972.656361][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1972.656364][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1972.656368][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1972.656375][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1972.656379][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1972.656385][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1972.656391][    C0] RIP: 0033:0x7f439756d93b
[ 1972.656396][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1972.656399][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1972.656402][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1972.656405][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1972.656407][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 1972.656408][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1972.656410][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 1976.669135][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 1976.669143][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 1976.669147][ C2] softirqs last disabled at (0): 0x0 
| [ 1976.669158][    C2] Tainted: [L]=SOFTLOCKUP
[ 1976.669159][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1976.669162][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1976.669169][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1976.669172][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 1976.669176][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1976.669178][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1976.669180][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1976.669182][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 1976.669184][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 1976.669186][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 1976.669189][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1976.669193][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 1976.669195][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1976.669206][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1976.669208][    C2] PKRU: 55555554
[ 1976.669209][    C2] Call Trace:
[ 1976.669214][    C2]  <TASK>
[ 1976.669218][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1976.669222][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1976.669227][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1976.669232][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1976.669238][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1976.669242][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1976.669246][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1976.669249][ C2] ? xa_store (lib/xarray.c:1734) 
[ 1976.669255][ C2] xa_store (lib/xarray.c:1734) 
[ 1976.669260][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1976.669270][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1976.669275][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1976.669278][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1976.669281][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1976.669286][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1976.669290][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1976.669297][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1976.669301][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1976.669306][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1976.669312][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 1976.669317][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1976.669325][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1976.669329][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 1976.669335][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 1976.669340][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1976.669344][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1976.669348][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1976.669351][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1976.669355][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1976.669361][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1976.669366][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1976.669371][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1976.669375][    C2] RIP: 0033:0x7f439756d93b
[ 1976.669380][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1976.669383][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1976.669386][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1976.669389][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1976.669391][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1976.669393][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1976.669395][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 1984.244683][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 1984.244961][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 1984.245371][    C1] NMI backtrace for cpu 1
| [ 1984.245392][    C1] Tainted: [L]=SOFTLOCKUP
[ 1984.245394][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1984.245397][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1984.245410][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1984.245414][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 1984.245418][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1984.245422][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1984.245424][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1984.245427][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 1984.245429][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 1984.245431][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 1984.245434][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1984.245438][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 1984.245440][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1984.245441][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1984.245443][    C1] PKRU: 55555554
[ 1984.245448][    C1] Call Trace:
[ 1984.245451][    C1]  <TASK>
[ 1984.245456][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1984.245460][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1984.245466][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1984.245470][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 1984.245479][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1984.245482][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1984.245485][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1984.245488][ C1] ? xa_store (lib/xarray.c:1734) 
[ 1984.245495][ C1] xa_store (lib/xarray.c:1734) 
[ 1984.245500][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1984.245506][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1984.245511][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1984.245514][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1984.245517][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1984.245523][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1984.245527][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1984.245535][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1984.245539][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1984.245544][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1984.245551][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 1984.245556][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1984.245565][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1984.245569][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 1984.245576][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 1984.245583][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1984.245587][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1984.245593][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1984.245596][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1984.245600][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1984.245607][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1984.245611][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1984.245617][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1984.245622][    C1] RIP: 0033:0x7f439756d93b
[ 1984.245628][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1984.245631][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1984.245634][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1984.245636][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1984.245638][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 1984.245640][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1984.245642][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1984.245640][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 1984.245642][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 1984.245648][    C1]  </TASK>
| [ 1984.246368][    C3] Tainted: [L]=SOFTLOCKUP
[ 1984.246370][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1984.246372][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 1984.246383][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 1984.246386][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 1984.246390][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 1984.246392][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 1984.246395][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 1984.246396][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 1984.246399][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 1984.246401][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 1984.246403][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1984.246407][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 1984.246409][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1984.246411][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1984.246413][    C3] PKRU: 55555554
[ 1984.246414][    C3] Call Trace:
[ 1984.246416][    C3]  <IRQ>
[ 1984.246417][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 1984.246422][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 1984.246427][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 1984.246430][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1984.246434][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1984.246438][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1984.246441][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1984.246445][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1984.246448][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 1984.246451][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1984.246454][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1984.246456][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1984.246459][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1984.246464][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 1984.246468][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1984.246471][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1984.246474][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1984.246480][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 1984.246484][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 1984.246489][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1984.246494][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1984.246500][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 1984.246505][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1984.246508][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1984.246511][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 1984.246514][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 1984.246518][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 1984.246520][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1984.246526][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1984.246529][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 1984.246532][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 1984.246539][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 1984.246544][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1984.246547][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 1984.246550][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1984.246553][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1984.246557][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1984.246562][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 1984.246566][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1984.246569][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1984.246574][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1984.246578][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1984.246581][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1984.246586][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1984.246590][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 1984.246596][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1984.246600][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1984.246603][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1984.246606][    C3]  </IRQ>
[ 1984.246608][    C3]  <TASK>
[ 1984.246609][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1984.246614][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1984.246617][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 1984.246620][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 1984.246622][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 1984.246624][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 1984.246626][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 1984.246628][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 1984.246630][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 1984.246634][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 1984.246640][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 1984.246645][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 1984.246649][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1984.246654][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1984.246657][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 1984.246661][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 1984.246664][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 1984.246669][ C3] xas_alloc (lib/xarray.c:378) 
[ 1984.246673][ C3] xas_create (lib/xarray.c:685) 
[ 1984.246679][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 1984.246683][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1984.246686][ C3] __xa_store (lib/xarray.c:1703) 
[ 1984.246691][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 1984.246695][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1984.246698][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1984.246701][ C3] ? xa_store (lib/xarray.c:1734) 
[ 1984.246706][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 1984.246710][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 1984.246714][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 1984.246719][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1984.246722][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1984.246725][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1984.246729][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1984.246732][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1984.246737][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 1984.246741][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 1984.246745][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 1984.246749][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 1984.246754][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 1984.246760][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 1984.246765][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 1984.246770][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 1984.246776][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 1984.246779][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 1984.246783][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1984.246785][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 1984.246789][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 1984.246795][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 1984.246799][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1984.246804][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1984.246807][    C3] RIP: 0033:0x7f439756d93b
[ 1984.246812][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1984.246815][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 1984.246817][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 1984.246819][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 1984.246821][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 1984.246823][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 1984.246824][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2000.656144][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2000.656154][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2000.656158][ C0] softirqs last disabled at (0): 0x0 
| [ 2000.656172][    C0] Tainted: [L]=SOFTLOCKUP
[ 2000.656174][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2000.656177][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2000.656188][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2000.656192][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2000.656196][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2000.656198][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2000.656211][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2000.656213][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2000.656215][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2000.656217][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2000.656220][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2000.656224][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2000.656228][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2000.656230][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2000.656231][    C0] PKRU: 55555554
[ 2000.656233][    C0] Call Trace:
[ 2000.656238][    C0]  <TASK>
[ 2000.656243][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2000.656250][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2000.656256][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2000.656261][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2000.656269][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2000.656273][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2000.656276][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2000.656280][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2000.656287][ C0] xa_store (lib/xarray.c:1734) 
[ 2000.656292][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2000.656298][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2000.656303][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2000.656307][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2000.656310][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2000.656317][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2000.656320][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2000.656328][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2000.656332][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2000.656337][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2000.656344][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2000.656349][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2000.656359][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2000.656363][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2000.656369][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2000.656375][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2000.656378][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2000.656384][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2000.656387][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2000.656391][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2000.656398][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2000.656402][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2000.656408][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2000.656414][    C0] RIP: 0033:0x7f439756d93b
[ 2000.656420][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2000.656422][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2000.656426][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2000.656430][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2000.656432][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2000.656433][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2000.656436][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2004.669136][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2004.669144][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2004.669148][ C2] softirqs last disabled at (0): 0x0 
| [ 2004.669160][    C2] Tainted: [L]=SOFTLOCKUP
[ 2004.669161][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2004.669163][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2004.669172][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2004.669175][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2004.669178][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2004.669180][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2004.669182][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2004.669184][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2004.669186][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2004.669189][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2004.669191][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2004.669195][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2004.669197][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2004.669199][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2004.669200][    C2] PKRU: 55555554
[ 2004.669202][    C2] Call Trace:
[ 2004.669205][    C2]  <TASK>
[ 2004.669209][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2004.669213][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2004.669218][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2004.669222][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2004.669229][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2004.669233][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2004.669235][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2004.669238][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2004.669244][ C2] xa_store (lib/xarray.c:1734) 
[ 2004.669249][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2004.669254][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2004.669259][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2004.669262][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2004.669265][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2004.669270][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2004.669274][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2004.669290][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2004.669293][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2004.669298][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2004.669304][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2004.669309][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2004.669318][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2004.669322][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2004.669327][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2004.669332][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2004.669335][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2004.669340][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2004.669343][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2004.669347][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2004.669353][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2004.669357][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2004.669362][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2004.669367][    C2] RIP: 0033:0x7f439756d93b
[ 2004.669371][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2004.669374][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2004.669377][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2004.669379][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2004.669381][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2004.669383][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2004.669384][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2008.669141][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2008.669150][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2008.669154][ C1] softirqs last disabled at (0): 0x0 
| [ 2008.669169][    C1] Tainted: [L]=SOFTLOCKUP
[ 2008.669171][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2008.669174][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2008.669184][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2008.669187][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2008.669190][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2008.669193][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2008.669195][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2008.669197][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2008.669199][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2008.669202][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2008.669204][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2008.669208][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2008.669221][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2008.669223][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2008.669224][    C1] PKRU: 55555554
[ 2008.669226][    C1] Call Trace:
[ 2008.669230][    C1]  <TASK>
[ 2008.669234][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2008.669238][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2008.669244][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2008.669249][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2008.669256][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2008.669260][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2008.669263][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2008.669266][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2008.669273][ C1] xa_store (lib/xarray.c:1734) 
[ 2008.669278][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2008.669284][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2008.669290][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2008.669293][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2008.669296][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2008.669303][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2008.669306][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2008.669314][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2008.669318][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2008.669323][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2008.669330][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2008.669335][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2008.669344][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2008.669348][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2008.669354][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2008.669360][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2008.669363][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2008.669368][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2008.669371][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2008.669375][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2008.669382][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2008.669386][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2008.669392][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2008.669398][    C1] RIP: 0033:0x7f439756d93b
[ 2008.669404][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2008.669407][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2008.669410][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2008.669412][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2008.669414][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2008.669416][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2008.669418][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2008.670139][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2008.670148][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2008.670152][ C3] softirqs last disabled at (0): 0x0 
| [ 2008.670164][    C3] Tainted: [L]=SOFTLOCKUP
[ 2008.670165][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2008.670168][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2008.670176][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2008.670179][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2008.670182][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2008.670184][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2008.670186][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2008.670188][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2008.670189][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2008.670192][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2008.670194][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2008.670198][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2008.670200][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2008.670201][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2008.670203][    C3] PKRU: 55555554
[ 2008.670204][    C3] Call Trace:
[ 2008.670208][    C3]  <IRQ>
[ 2008.670209][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2008.670214][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2008.670220][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2008.670223][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2008.670228][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2008.670232][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2008.670236][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2008.670240][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2008.670243][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2008.670246][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2008.670249][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2008.670252][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2008.670255][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2008.670260][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2008.670265][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2008.670267][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2008.670271][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2008.670277][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2008.670281][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2008.670286][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2008.670290][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2008.670296][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2008.670302][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2008.670305][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2008.670308][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2008.670311][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2008.670314][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2008.670317][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2008.670323][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2008.670325][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2008.670328][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2008.670333][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2008.670337][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2008.670341][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2008.670344][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2008.670347][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2008.670351][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2008.670355][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2008.670360][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2008.670363][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2008.670368][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2008.670373][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2008.670376][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2008.670381][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2008.670386][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2008.670392][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2008.670396][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2008.670399][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2008.670403][    C3]  </IRQ>
[ 2008.670404][    C3]  <TASK>
[ 2008.670405][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2008.670411][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2008.670414][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2008.670417][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2008.670420][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2008.670422][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2008.670424][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2008.670426][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2008.670428][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2008.670432][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2008.670438][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2008.670444][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2008.670449][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2008.670453][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2008.670456][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2008.670460][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2008.670463][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2008.670468][ C3] xas_alloc (lib/xarray.c:378) 
[ 2008.670473][ C3] xas_create (lib/xarray.c:685) 
[ 2008.670479][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2008.670484][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2008.670488][ C3] __xa_store (lib/xarray.c:1703) 
[ 2008.670492][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2008.670497][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2008.670500][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2008.670503][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2008.670508][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2008.670511][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2008.670515][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2008.670519][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2008.670522][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2008.670525][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2008.670529][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2008.670532][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2008.670537][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2008.670541][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2008.670546][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2008.670549][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2008.670554][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2008.670562][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2008.670566][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2008.670571][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2008.670575][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2008.670579][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2008.670582][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2008.670584][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2008.670588][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2008.670594][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2008.670598][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2008.670603][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2008.670606][    C3] RIP: 0033:0x7f439756d93b
[ 2008.670610][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2008.670613][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2008.670616][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2008.670618][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2008.670620][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2008.670622][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2008.670624][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2028.656139][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2028.656148][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2028.656152][ C0] softirqs last disabled at (0): 0x0 
| [ 2028.656166][    C0] Tainted: [L]=SOFTLOCKUP
[ 2028.656167][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2028.656170][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2028.656180][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2028.656184][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2028.656187][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2028.656189][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2028.656191][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2028.656194][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2028.656196][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2028.656198][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2028.656201][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2028.656205][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2028.656207][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2028.656209][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2028.656210][    C0] PKRU: 55555554
[ 2028.656212][    C0] Call Trace:
[ 2028.656223][    C0]  <TASK>
[ 2028.656226][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2028.656230][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2028.656235][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2028.656240][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2028.656247][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2028.656251][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2028.656255][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2028.656258][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2028.656265][ C0] xa_store (lib/xarray.c:1734) 
[ 2028.656270][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2028.656276][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2028.656281][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2028.656284][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2028.656287][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2028.656294][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2028.656297][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2028.656305][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2028.656309][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2028.656314][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2028.656321][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2028.656327][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2028.656336][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2028.656340][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2028.656346][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2028.656351][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2028.656355][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2028.656360][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2028.656363][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2028.656367][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2028.656374][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2028.656379][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2028.656385][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2028.656390][    C0] RIP: 0033:0x7f439756d93b
[ 2028.656395][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2028.656398][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2028.656401][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2028.656403][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2028.656405][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2028.656407][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2028.656409][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2032.669135][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2032.669143][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2032.669146][ C2] softirqs last disabled at (0): 0x0 
| [ 2032.669158][    C2] Tainted: [L]=SOFTLOCKUP
[ 2032.669159][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2032.669161][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2032.669169][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2032.669172][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2032.669175][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2032.669178][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2032.669180][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2032.669182][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2032.669184][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2032.669186][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2032.669188][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2032.669193][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2032.669195][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2032.669197][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2032.669198][    C2] PKRU: 55555554
[ 2032.669199][    C2] Call Trace:
[ 2032.669202][    C2]  <TASK>
[ 2032.669206][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2032.669210][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2032.669215][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2032.669219][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2032.669225][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2032.669228][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2032.669231][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2032.669234][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2032.669241][ C2] xa_store (lib/xarray.c:1734) 
[ 2032.669245][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2032.669251][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2032.669256][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2032.669259][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2032.669263][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2032.669268][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2032.669272][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2032.669278][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2032.669282][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2032.669287][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2032.669292][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2032.669297][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2032.669306][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2032.669310][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2032.669315][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2032.669320][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2032.669323][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2032.669328][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2032.669331][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2032.669335][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2032.669341][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2032.669345][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2032.669350][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2032.669354][    C2] RIP: 0033:0x7f439756d93b
[ 2032.669359][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2032.669362][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2032.669365][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2032.669367][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2032.669368][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2032.669370][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2032.669372][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2036.669141][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2036.669151][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2036.669154][ C1] softirqs last disabled at (0): 0x0 
| [ 2036.669168][    C1] Tainted: [L]=SOFTLOCKUP
[ 2036.669170][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2036.669173][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2036.669182][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2036.669186][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2036.669189][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2036.669191][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2036.669193][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2036.669195][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2036.669197][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2036.669200][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2036.669202][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2036.669207][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2036.669209][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2036.669211][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2036.669213][    C1] PKRU: 55555554
[ 2036.669214][    C1] Call Trace:
[ 2036.669219][    C1]  <TASK>
[ 2036.669223][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2036.669226][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2036.669232][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2036.669236][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2036.669244][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2036.669247][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2036.669250][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2036.669253][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2036.669260][ C1] xa_store (lib/xarray.c:1734) 
[ 2036.669265][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2036.669271][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2036.669276][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2036.669279][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2036.669282][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2036.669289][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2036.669293][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2036.669301][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2036.669305][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2036.669310][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2036.669317][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2036.669322][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2036.669332][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2036.669336][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2036.669343][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2036.669348][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2036.669352][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2036.669357][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2036.669361][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2036.669364][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2036.669372][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2036.669376][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2036.669382][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2036.669387][    C1] RIP: 0033:0x7f439756d93b
[ 2036.669392][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2036.669395][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2036.669398][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2036.669401][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2036.669410][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2036.669412][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2036.669414][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2036.670134][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2036.670141][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2036.670145][ C3] softirqs last disabled at (0): 0x0 
| [ 2036.670157][    C3] Tainted: [L]=SOFTLOCKUP
[ 2036.670158][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2036.670161][ C3] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 2036.670168][ C3] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 2036.670171][    C3] RSP: 0018:ffffc90000270a40 EFLAGS: 00000202
[ 2036.670174][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2036.670176][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2036.670178][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2036.670180][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2036.670182][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2036.670184][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2036.670187][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2036.670191][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2036.670193][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2036.670195][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2036.670197][    C3] PKRU: 55555554
[ 2036.670198][    C3] Call Trace:
[ 2036.670202][    C3]  <IRQ>
[ 2036.670203][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2036.670210][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2036.670215][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2036.670220][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2036.670223][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2036.670228][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2036.670232][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2036.670235][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2036.670239][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2036.670243][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2036.670246][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2036.670249][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2036.670252][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2036.670255][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2036.670260][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2036.670264][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2036.670268][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2036.670271][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2036.670277][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2036.670281][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2036.670286][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2036.670291][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2036.670297][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2036.670302][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2036.670305][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2036.670309][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2036.670312][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2036.670315][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2036.670318][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2036.670325][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2036.670328][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2036.670331][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2036.670335][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2036.670340][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2036.670343][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2036.670346][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2036.670349][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2036.670352][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2036.670357][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2036.670361][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2036.670364][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2036.670370][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2036.670374][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2036.670377][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2036.670382][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2036.670386][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2036.670392][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2036.670395][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2036.670398][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2036.670402][    C3]  </IRQ>
[ 2036.670403][    C3]  <TASK>
[ 2036.670405][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2036.670409][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2036.670413][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2036.670415][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2036.670417][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2036.670419][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2036.670421][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2036.670423][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2036.670425][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2036.670429][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2036.670434][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2036.670440][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2036.670443][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2036.670448][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2036.670451][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2036.670455][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2036.670458][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2036.670463][ C3] xas_alloc (lib/xarray.c:378) 
[ 2036.670467][ C3] xas_create (lib/xarray.c:685) 
[ 2036.670473][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2036.670478][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2036.670481][ C3] __xa_store (lib/xarray.c:1703) 
[ 2036.670485][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2036.670490][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2036.670493][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2036.670496][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2036.670501][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2036.670505][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2036.670508][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2036.670513][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2036.670515][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2036.670518][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2036.670522][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2036.670525][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2036.670530][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2036.670534][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2036.670538][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2036.670542][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2036.670547][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2036.670554][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2036.670558][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2036.670564][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2036.670568][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2036.670571][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2036.670575][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2036.670577][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2036.670581][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2036.670587][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2036.670591][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2036.670596][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2036.670599][    C3] RIP: 0033:0x7f439756d93b
[ 2036.670603][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2036.670605][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2036.670608][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2036.670610][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2036.670612][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2036.670614][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2036.670616][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2056.656142][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2056.656152][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2056.656156][ C0] softirqs last disabled at (0): 0x0 
| [ 2056.656170][    C0] Tainted: [L]=SOFTLOCKUP
[ 2056.656171][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2056.656174][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 2056.656182][ C0] Code: 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff <5b> b8 01 00 00 00 5d 41 5c c3 cc cc cc cc 41 bc 08 00 00 00 45 29
All code
========
   0:	00 74 f2 48          	add    %dh,0x48(%rdx,%rsi,8)
   4:	89 c2                	mov    %eax,%edx
   6:	b8 01 00 00 00       	mov    $0x1,%eax
   b:	48 85 d2             	test   %rdx,%rdx
   e:	0f 84 4c ff ff ff    	je     0xffffffffffffff60
  14:	41 83 e2 07          	and    $0x7,%r10d
  18:	49 39 d1             	cmp    %rdx,%r9
  1b:	0f 85 34 ff ff ff    	jne    0xffffffffffffff55
  21:	45 3a 11             	cmp    (%r9),%r10b
  24:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff55
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	b8 01 00 00 00       	mov    $0x1,%eax
  30:	5d                   	pop    %rbp
  31:	41 5c                	pop    %r12
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  3e:	45                   	rex.RB
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	b8 01 00 00 00       	mov    $0x1,%eax
   6:	5d                   	pop    %rbp
   7:	41 5c                	pop    %r12
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  14:	45                   	rex.RB
  15:	29                   	.byte 0x29
[ 2056.656185][    C0] RSP: 0018:ffffc900034c79f8 EFLAGS: 00000246
[ 2056.656188][    C0] RAX: fffffbfff77dcb81 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 2056.656191][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2056.656193][    C0] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2056.656195][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2056.656197][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2056.656200][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2056.656202][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2056.656208][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2056.656210][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2056.656211][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2056.656214][    C0] PKRU: 55555554
[ 2056.656215][    C0] Call Trace:
[ 2056.656220][    C0]  <TASK>
[ 2056.656224][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2056.656235][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2056.656238][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2056.656243][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2056.656248][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2056.656256][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2056.656260][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2056.656263][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2056.656266][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2056.656273][ C0] xa_store (lib/xarray.c:1734) 
[ 2056.656278][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2056.656284][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2056.656290][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2056.656293][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2056.656296][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2056.656303][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2056.656307][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2056.656315][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2056.656319][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2056.656324][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2056.656332][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2056.656337][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2056.656346][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2056.656350][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2056.656357][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2056.656363][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2056.656366][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2056.656372][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2056.656375][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2056.656379][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2056.656386][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2056.656390][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2056.656397][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2056.656403][    C0] RIP: 0033:0x7f439756d93b
[ 2056.656407][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2056.656410][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2056.656413][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2056.656415][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2056.656417][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2056.656419][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2056.656421][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2060.669135][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2060.669143][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2060.669147][ C2] softirqs last disabled at (0): 0x0 
| [ 2060.669159][    C2] Tainted: [L]=SOFTLOCKUP
[ 2060.669160][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2060.669163][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2060.669171][ C2] Code: 00 00 fc ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 <8b> 45 00 89 44 24 40 85 c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	fc                   	cld
   3:	ff                   	lcall  (bad)
   4:	df 49 01             	fisttps 0x1(%rcx)
   7:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   b:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
  11:	48 89 ef             	mov    %rbp,%rdi
  14:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b876
  19:	41 0f b6 06          	movzbl (%r14),%eax
  1d:	41 38 c5             	cmp    %al,%r13b
  20:	7c 08                	jl     0x2a
  22:	84 c0                	test   %al,%al
  24:	0f 85 8d 07 00 00    	jne    0x7b7
  2a:*	8b 45 00             	mov    0x0(%rbp),%eax		<-- trapping instruction
  2d:	89 44 24 40          	mov    %eax,0x40(%rsp)
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 6e 01 00 00    	jne    0x1a7
  39:	48 89 ef             	mov    %rbp,%rdi
  3c:	be                   	.byte 0xbe
  3d:	04 00                	add    $0x0,%al
	...

Code starting with the faulting instruction
===========================================
   0:	8b 45 00             	mov    0x0(%rbp),%eax
   3:	89 44 24 40          	mov    %eax,0x40(%rsp)
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 6e 01 00 00    	jne    0x17d
   f:	48 89 ef             	mov    %rbp,%rdi
  12:	be                   	.byte 0xbe
  13:	04 00                	add    $0x0,%al
	...
[ 2060.669175][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000246
[ 2060.669178][    C2] RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2060.669180][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2060.669182][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2060.669184][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2060.669186][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2060.669188][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2060.669191][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2060.669195][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2060.669197][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2060.669199][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2060.669200][    C2] PKRU: 55555554
[ 2060.669202][    C2] Call Trace:
[ 2060.669206][    C2]  <TASK>
[ 2060.669210][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2060.669214][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2060.669220][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2060.669223][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2060.669231][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2060.669234][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2060.669237][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2060.669240][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2060.669247][ C2] xa_store (lib/xarray.c:1734) 
[ 2060.669251][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2060.669256][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2060.669262][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2060.669265][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2060.669268][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2060.669273][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2060.669277][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2060.669284][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2060.669288][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2060.669293][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2060.669299][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2060.669303][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2060.669312][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2060.669316][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2060.669321][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2060.669326][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2060.669330][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2060.669334][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2060.669337][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2060.669341][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2060.669347][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2060.669351][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2060.669356][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2060.669360][    C2] RIP: 0033:0x7f439756d93b
[ 2060.669365][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2060.669368][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2060.669371][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2060.669373][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2060.669375][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2060.669377][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2060.669379][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2062.259086][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 2062.259373][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 2062.259628][    C1] NMI backtrace for cpu 1
| [ 2062.259647][    C1] Tainted: [L]=SOFTLOCKUP
[ 2062.259649][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2062.259652][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2062.259663][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2062.259667][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2062.259671][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2062.259674][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2062.259676][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2062.259678][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2062.259680][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2062.259682][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2062.259685][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2062.259689][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2062.259691][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2062.259692][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2062.259694][    C1] PKRU: 55555554
[ 2062.259695][    C1] Call Trace:
[ 2062.259699][    C1]  <TASK>
[ 2062.259703][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2062.259707][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2062.259713][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2062.259717][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2062.259725][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2062.259729][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2062.259732][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2062.259735][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2062.259742][ C1] xa_store (lib/xarray.c:1734) 
[ 2062.259746][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2062.259752][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2062.259757][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2062.259760][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2062.259763][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2062.259769][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2062.259772][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2062.259780][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2062.259784][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2062.259789][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2062.259796][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2062.259801][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2062.259810][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2062.259814][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2062.259821][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2062.259828][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2062.259831][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2062.259837][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2062.259840][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2062.259844][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2062.259851][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2062.259855][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2062.259861][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2062.259866][    C1] RIP: 0033:0x7f439756d93b
[ 2062.259870][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2062.259873][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2062.259876][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2062.259878][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2062.259880][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2062.259882][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2062.259884][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2062.259882][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 2062.259884][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2062.259890][    C1]  </TASK>
| [ 2062.260630][    C3] Tainted: [L]=SOFTLOCKUP
[ 2062.260632][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2062.260633][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2062.260640][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2062.260643][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2062.260647][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2062.260650][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2062.260652][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2062.260654][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2062.260657][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2062.260659][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2062.260662][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2062.260666][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2062.260668][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2062.260670][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2062.260672][    C3] PKRU: 55555554
[ 2062.260673][    C3] Call Trace:
[ 2062.260675][    C3]  <IRQ>
[ 2062.260676][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2062.260681][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2062.260685][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2062.260689][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2062.260692][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2062.260697][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2062.260700][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2062.260704][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2062.260707][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2062.260710][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2062.260712][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2062.260715][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2062.260718][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2062.260723][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2062.260726][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2062.260729][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2062.260733][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2062.260739][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2062.260743][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2062.260748][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2062.260752][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2062.260759][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2062.260764][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2062.260767][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2062.260770][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2062.260773][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2062.260777][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2062.260779][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2062.260785][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2062.260788][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2062.260791][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2062.260796][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2062.260799][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2062.260803][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2062.260805][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2062.260809][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2062.260812][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2062.260817][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2062.260821][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2062.260824][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2062.260829][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2062.260833][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2062.260836][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2062.260841][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2062.260845][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2062.260851][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2062.260854][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2062.260857][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2062.260861][    C3]  </IRQ>
[ 2062.260862][    C3]  <TASK>
[ 2062.260863][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2062.260867][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2062.260870][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2062.260872][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2062.260875][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2062.260876][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2062.260878][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2062.260880][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2062.260881][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2062.260885][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2062.260891][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2062.260896][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2062.260900][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2062.260905][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2062.260907][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2062.260911][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2062.260914][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2062.260919][ C3] xas_alloc (lib/xarray.c:378) 
[ 2062.260923][ C3] xas_create (lib/xarray.c:685) 
[ 2062.260929][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2062.260933][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2062.260937][ C3] __xa_store (lib/xarray.c:1703) 
[ 2062.260941][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2062.260945][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2062.260948][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2062.260951][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2062.260956][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2062.260960][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2062.260963][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2062.260968][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2062.260971][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2062.260973][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2062.260977][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2062.260981][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2062.260985][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2062.260989][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2062.260994][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2062.260998][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2062.261002][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2062.261010][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2062.261014][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2062.261019][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2062.261024][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2062.261028][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2062.261031][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2062.261033][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2062.261037][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2062.261043][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2062.261047][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2062.261052][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2062.261054][    C3] RIP: 0033:0x7f439756d93b
[ 2062.261059][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2062.261061][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2062.261064][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2062.261066][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2062.261067][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2062.261069][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2062.261071][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2084.656142][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2084.656152][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2084.656155][ C0] softirqs last disabled at (0): 0x0 
| [ 2084.656170][    C0] Tainted: [L]=SOFTLOCKUP
[ 2084.656172][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2084.656174][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2084.656185][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2084.656189][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2084.656192][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2084.656194][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2084.656197][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2084.656199][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2084.656201][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2084.656203][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2084.656206][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2084.656210][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2084.656212][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2084.656214][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2084.656216][    C0] PKRU: 55555554
[ 2084.656217][    C0] Call Trace:
[ 2084.656223][    C0]  <TASK>
[ 2084.656227][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2084.656231][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2084.656237][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2084.656242][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2084.656249][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2084.656253][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2084.656256][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2084.656259][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2084.656266][ C0] xa_store (lib/xarray.c:1734) 
[ 2084.656271][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2084.656276][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2084.656281][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2084.656284][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2084.656287][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2084.656294][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2084.656298][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2084.656306][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2084.656310][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2084.656315][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2084.656322][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2084.656327][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2084.656337][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2084.656341][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2084.656348][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2084.656353][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2084.656356][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2084.656362][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2084.656365][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2084.656368][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2084.656376][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2084.656380][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2084.656386][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2084.656392][    C0] RIP: 0033:0x7f439756d93b
[ 2084.656395][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2084.656398][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2084.656401][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2084.656404][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2084.656406][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2084.656408][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2084.656410][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2088.669135][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2088.669143][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2088.669147][ C2] softirqs last disabled at (0): 0x0 
| [ 2088.669159][    C2] Tainted: [L]=SOFTLOCKUP
[ 2088.669161][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2088.669163][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2088.669171][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2088.669174][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2088.669177][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2088.669180][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2088.669182][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2088.669184][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2088.669186][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2088.669188][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2088.669191][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2088.669195][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2088.669197][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2088.669198][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2088.669200][    C2] PKRU: 55555554
[ 2088.669201][    C2] Call Trace:
[ 2088.669204][    C2]  <TASK>
[ 2088.669208][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2088.669212][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2088.669217][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2088.669221][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2088.669228][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2088.669231][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2088.669234][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2088.669237][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2088.669243][ C2] xa_store (lib/xarray.c:1734) 
[ 2088.669248][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2088.669252][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2088.669258][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2088.669261][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2088.669264][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2088.669270][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2088.669274][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2088.669280][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2088.669284][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2088.669289][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2088.669295][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2088.669299][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2088.669308][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2088.669312][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2088.669317][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2088.669322][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2088.669325][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2088.669329][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2088.669332][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2088.669336][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2088.669342][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2088.669346][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2088.669351][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2088.669356][    C2] RIP: 0033:0x7f439756d93b
[ 2088.669360][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2088.669363][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2088.669366][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2088.669368][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2088.669370][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2088.669372][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2088.669374][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2088.669419][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2088.669428][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2088.669432][ C1] softirqs last disabled at (0): 0x0 
| [ 2088.669446][    C1] Tainted: [L]=SOFTLOCKUP
[ 2088.669447][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2088.669450][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2088.669459][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2088.669462][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2088.669466][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2088.669468][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2088.669470][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2088.669472][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2088.669474][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2088.669477][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2088.669479][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2088.669483][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2088.669485][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2088.669487][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2088.669489][    C1] PKRU: 55555554
[ 2088.669490][    C1] Call Trace:
[ 2088.669494][    C1]  <TASK>
[ 2088.669498][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2088.669502][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2088.669507][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2088.669511][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2088.669518][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2088.669522][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2088.669525][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2088.669528][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2088.669535][ C1] xa_store (lib/xarray.c:1734) 
[ 2088.669540][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2088.669545][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2088.669550][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2088.669553][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2088.669556][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2088.669562][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2088.669566][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2088.669574][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2088.669577][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2088.669582][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2088.669589][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2088.669594][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2088.669603][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2088.669607][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2088.669613][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2088.669619][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2088.669622][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2088.669627][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2088.669631][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2088.669634][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2088.669641][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2088.669645][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2088.669651][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2088.669657][    C1] RIP: 0033:0x7f439756d93b
[ 2088.669661][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2088.669664][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2088.669667][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2088.669669][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2088.669671][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2088.669673][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2088.669675][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2088.670128][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2088.670134][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2088.670138][ C3] softirqs last disabled at (0): 0x0 
| [ 2088.670149][    C3] Tainted: [L]=SOFTLOCKUP
[ 2088.670150][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2088.670152][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:104 kernel/locking/qspinlock.c:141) 
[ 2088.670158][ C3] Code: c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44 24 40 <85> c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00 00 e8 60 b8 c7 fd be
All code
========
   0:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   4:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
   a:	48 89 ef             	mov    %rbp,%rdi
   d:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86f
  12:	41 0f b6 06          	movzbl (%r14),%eax
  16:	41 38 c5             	cmp    %al,%r13b
  19:	7c 08                	jl     0x23
  1b:	84 c0                	test   %al,%al
  1d:	0f 85 8d 07 00 00    	jne    0x7b0
  23:	8b 45 00             	mov    0x0(%rbp),%eax
  26:	89 44 24 40          	mov    %eax,0x40(%rsp)
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 6e 01 00 00    	jne    0x1a0
  32:	48 89 ef             	mov    %rbp,%rdi
  35:	be 04 00 00 00       	mov    $0x4,%esi
  3a:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b89f
  3f:	be                   	.byte 0xbe

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 6e 01 00 00    	jne    0x176
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	be 04 00 00 00       	mov    $0x4,%esi
  10:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b875
  15:	be                   	.byte 0xbe
[ 2088.670162][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000246
[ 2088.670164][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2088.670167][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2088.670169][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2088.670171][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2088.670173][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2088.670175][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2088.670177][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2088.670181][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2088.670183][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2088.670185][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2088.670186][    C3] PKRU: 55555554
[ 2088.670188][    C3] Call Trace:
[ 2088.670190][    C3]  <IRQ>
[ 2088.670192][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2088.670197][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2088.670202][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2088.670205][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2088.670210][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2088.670214][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2088.670218][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2088.670222][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2088.670225][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2088.670228][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2088.670231][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2088.670233][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2088.670236][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2088.670241][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2088.670244][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2088.670247][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2088.670250][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2088.670256][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2088.670260][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2088.670265][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2088.670269][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2088.670275][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2088.670279][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2088.670282][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2088.670285][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2088.670289][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2088.670292][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2088.670295][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2088.670300][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2088.670303][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2088.670306][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2088.670311][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2088.670315][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2088.670319][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2088.670322][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2088.670326][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2088.670329][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2088.670333][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2088.670338][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2088.670341][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2088.670346][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2088.670350][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2088.670353][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2088.670358][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2088.670362][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2088.670368][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2088.670372][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2088.670375][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2088.670379][    C3]  </IRQ>
[ 2088.670380][    C3]  <TASK>
[ 2088.670381][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2088.670385][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2088.670388][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2088.670390][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2088.670393][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2088.670395][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2088.670397][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2088.670399][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2088.670401][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2088.670405][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2088.670411][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2088.670416][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2088.670419][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2088.670424][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2088.670427][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2088.670431][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2088.670434][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2088.670439][ C3] xas_alloc (lib/xarray.c:378) 
[ 2088.670443][ C3] xas_create (lib/xarray.c:685) 
[ 2088.670449][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2088.670454][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2088.670457][ C3] __xa_store (lib/xarray.c:1703) 
[ 2088.670461][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2088.670466][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2088.670469][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2088.670472][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2088.670477][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2088.670481][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2088.670483][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2088.670488][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2088.670491][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2088.670494][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2088.670498][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2088.670501][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2088.670506][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2088.670510][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2088.670515][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2088.670518][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2088.670523][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2088.670530][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2088.670534][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2088.670539][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2088.670543][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2088.670546][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2088.670550][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2088.670552][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2088.670556][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2088.670562][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2088.670566][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2088.670570][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2088.670573][    C3] RIP: 0033:0x7f439756d93b
[ 2088.670577][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2088.670579][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2088.670582][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2088.670584][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2088.670586][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2088.670588][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2088.670590][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2112.656152][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2112.656162][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2112.656166][ C0] softirqs last disabled at (0): 0x0 
| [ 2112.656181][    C0] Tainted: [L]=SOFTLOCKUP
[ 2112.656183][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2112.656185][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2112.656198][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2112.656201][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2112.656206][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2112.656208][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2112.656210][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2112.656212][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2112.656215][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2112.656217][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2112.656220][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2112.656231][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2112.656233][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2112.656235][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2112.656237][    C0] PKRU: 55555554
[ 2112.656238][    C0] Call Trace:
[ 2112.656245][    C0]  <TASK>
[ 2112.656249][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2112.656254][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2112.656260][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2112.656265][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2112.656273][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2112.656278][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2112.656281][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2112.656285][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2112.656292][ C0] xa_store (lib/xarray.c:1734) 
[ 2112.656297][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2112.656304][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2112.656309][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2112.656312][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2112.656315][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2112.656323][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2112.656326][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2112.656335][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2112.656340][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2112.656345][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2112.656353][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2112.656358][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2112.656368][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2112.656372][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2112.656379][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2112.656385][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2112.656389][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2112.656394][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2112.656398][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2112.656401][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2112.656409][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2112.656413][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2112.656419][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2112.656426][    C0] RIP: 0033:0x7f439756d93b
[ 2112.656432][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2112.656434][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2112.656438][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2112.656440][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2112.656442][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2112.656444][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2112.656446][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2116.669140][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2116.669148][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2116.669152][ C2] softirqs last disabled at (0): 0x0 
| [ 2116.669164][    C2] Tainted: [L]=SOFTLOCKUP
[ 2116.669165][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2116.669168][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2116.669176][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2116.669179][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2116.669182][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2116.669184][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2116.669187][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2116.669188][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2116.669190][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2116.669192][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2116.669195][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2116.669200][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2116.669202][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2116.669204][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2116.669205][    C2] PKRU: 55555554
[ 2116.669207][    C2] Call Trace:
[ 2116.669210][    C2]  <TASK>
[ 2116.669214][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2116.669219][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2116.669224][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2116.669228][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2116.669236][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2116.669239][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2116.669242][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2116.669245][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2116.669252][ C2] xa_store (lib/xarray.c:1734) 
[ 2116.669256][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2116.669262][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2116.669267][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2116.669270][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2116.669274][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2116.669280][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2116.669284][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2116.669291][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2116.669295][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2116.669300][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2116.669306][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2116.669311][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2116.669319][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2116.669323][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2116.669330][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2116.669335][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2116.669338][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2116.669343][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2116.669346][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2116.669349][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2116.669356][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2116.669360][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2116.669366][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2116.669370][    C2] RIP: 0033:0x7f439756d93b
[ 2116.669375][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2116.669378][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2116.669381][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2116.669384][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2116.669386][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2116.669387][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2116.669389][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2116.669438][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2116.669447][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2116.669451][ C1] softirqs last disabled at (0): 0x0 
| [ 2116.669465][    C1] Tainted: [L]=SOFTLOCKUP
[ 2116.669467][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2116.669469][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2116.669479][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2116.669482][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2116.669486][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2116.669489][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2116.669491][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2116.669493][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2116.669495][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2116.669497][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2116.669500][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2116.669506][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2116.669508][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2116.669510][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2116.669512][    C1] PKRU: 55555554
[ 2116.669513][    C1] Call Trace:
[ 2116.669517][    C1]  <TASK>
[ 2116.669521][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2116.669526][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2116.669531][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2116.669536][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2116.669543][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2116.669547][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2116.669550][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2116.669553][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2116.669560][ C1] xa_store (lib/xarray.c:1734) 
[ 2116.669565][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2116.669571][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2116.669576][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2116.669579][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2116.669583][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2116.669589][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2116.669593][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2116.669601][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2116.669605][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2116.669610][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2116.669617][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2116.669622][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2116.669631][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2116.669635][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2116.669642][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2116.669647][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2116.669651][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2116.669656][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2116.669660][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2116.669663][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2116.669670][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2116.669674][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2116.669679][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2116.669685][    C1] RIP: 0033:0x7f439756d93b
[ 2116.669690][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2116.669693][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2116.669696][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2116.669699][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2116.669701][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2116.669703][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2116.669705][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2116.670135][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2116.670142][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2116.670146][ C3] softirqs last disabled at (0): 0x0 
| [ 2116.670159][    C3] Tainted: [L]=SOFTLOCKUP
[ 2116.670161][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2116.670163][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2116.670170][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2116.670174][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2116.670177][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2116.670179][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2116.670182][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2116.670184][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2116.670186][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2116.670188][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2116.670191][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2116.670194][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2116.670196][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2116.670198][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2116.670200][    C3] PKRU: 55555554
[ 2116.670202][    C3] Call Trace:
[ 2116.670205][    C3]  <IRQ>
[ 2116.670206][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2116.670212][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2116.670218][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2116.670221][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2116.670225][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2116.670231][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2116.670234][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2116.670239][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2116.670242][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2116.670246][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2116.670248][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2116.670251][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2116.670254][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2116.670259][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2116.670263][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2116.670266][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2116.670270][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2116.670275][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2116.670279][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2116.670284][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2116.670289][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2116.670295][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2116.670300][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2116.670304][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2116.670307][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2116.670311][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2116.670314][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2116.670317][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2116.670323][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2116.670326][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2116.670329][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2116.670334][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2116.670338][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2116.670342][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2116.670345][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2116.670349][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2116.670352][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2116.670357][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2116.670362][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2116.670364][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2116.670370][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2116.670374][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2116.670378][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2116.670383][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2116.670388][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2116.670394][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2116.670399][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2116.670402][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2116.670406][    C3]  </IRQ>
[ 2116.670408][    C3]  <TASK>
[ 2116.670409][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2116.670414][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2116.670417][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2116.670420][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2116.670424][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2116.670426][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2116.670429][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2116.670431][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2116.670433][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2116.670437][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2116.670443][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2116.670449][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2116.670453][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2116.670457][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2116.670460][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2116.670464][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2116.670467][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2116.670473][ C3] xas_alloc (lib/xarray.c:378) 
[ 2116.670477][ C3] xas_create (lib/xarray.c:685) 
[ 2116.670483][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2116.670488][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2116.670492][ C3] __xa_store (lib/xarray.c:1703) 
[ 2116.670496][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2116.670501][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2116.670504][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2116.670507][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2116.670512][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2116.670516][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2116.670519][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2116.670525][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2116.670528][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2116.670531][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2116.670535][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2116.670538][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2116.670543][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2116.670547][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2116.670552][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2116.670556][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2116.670560][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2116.670568][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2116.670572][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2116.670577][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2116.670582][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2116.670585][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2116.670589][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2116.670592][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2116.670595][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2116.670601][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2116.670605][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2116.670609][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2116.670613][    C3] RIP: 0033:0x7f439756d93b
[ 2116.670617][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2116.670619][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2116.670622][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2116.670624][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2116.670626][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2116.670628][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2116.670629][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2140.272779][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 2140.273072][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 2140.273314][    C1] NMI backtrace for cpu 1
| [ 2140.273335][    C1] Tainted: [L]=SOFTLOCKUP
[ 2140.273337][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2140.273339][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2140.273351][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2140.273355][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2140.273360][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2140.273362][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2140.273364][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2140.273366][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2140.273368][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2140.273371][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2140.273373][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2140.273377][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2140.273379][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2140.273380][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2140.273382][    C1] PKRU: 55555554
[ 2140.273384][    C1] Call Trace:
[ 2140.273388][    C1]  <TASK>
[ 2140.273392][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2140.273396][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2140.273402][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2140.273406][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2140.273414][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2140.273417][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2140.273421][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2140.273424][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2140.273431][ C1] xa_store (lib/xarray.c:1734) 
[ 2140.273436][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2140.273442][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2140.273447][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2140.273450][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2140.273453][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2140.273460][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2140.273463][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2140.273471][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2140.273475][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2140.273480][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2140.273487][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2140.273492][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2140.273502][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2140.273506][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2140.273512][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2140.273519][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2140.273523][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2140.273528][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2140.273532][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2140.273535][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2140.273543][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2140.273547][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2140.273552][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2140.273558][    C1] RIP: 0033:0x7f439756d93b
[ 2140.273562][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2140.273565][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2140.273568][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2140.273570][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2140.273572][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2140.273574][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2140.273576][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2140.273574][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 2140.273576][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2140.273582][    C1]  </TASK>
| [ 2140.274319][    C3] Tainted: [L]=SOFTLOCKUP
[ 2140.274320][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2140.274322][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2140.274331][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2140.274334][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2140.274338][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2140.274341][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2140.274343][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2140.274345][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2140.274347][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2140.274349][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2140.274352][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2140.274355][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2140.274357][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2140.274359][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2140.274361][    C3] PKRU: 55555554
[ 2140.274363][    C3] Call Trace:
[ 2140.274365][    C3]  <IRQ>
[ 2140.274366][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2140.274372][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2140.274377][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2140.274380][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2140.274384][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2140.274389][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2140.274392][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2140.274396][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2140.274399][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2140.274402][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2140.274405][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2140.274407][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2140.274410][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2140.274416][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2140.274420][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2140.274423][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2140.274426][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2140.274431][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2140.274435][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2140.274440][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2140.274444][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2140.274450][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2140.274455][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2140.274458][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2140.274461][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2140.274465][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2140.274468][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2140.274470][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2140.274477][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2140.274480][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2140.274483][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2140.274487][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2140.274491][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2140.274494][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2140.274497][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2140.274501][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2140.274504][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2140.274508][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2140.274513][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2140.274515][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2140.274520][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2140.274524][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2140.274528][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2140.274533][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2140.274537][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2140.274543][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2140.274546][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2140.274549][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2140.274553][    C3]  </IRQ>
[ 2140.274554][    C3]  <TASK>
[ 2140.274556][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2140.274560][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2140.274563][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2140.274565][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2140.274567][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2140.274570][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2140.274571][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2140.274573][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2140.274575][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2140.274579][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2140.274585][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2140.274590][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2140.274593][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2140.274598][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2140.274601][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2140.274605][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2140.274608][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2140.274613][ C3] xas_alloc (lib/xarray.c:378) 
[ 2140.274617][ C3] xas_create (lib/xarray.c:685) 
[ 2140.274624][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2140.274628][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2140.274632][ C3] __xa_store (lib/xarray.c:1703) 
[ 2140.274636][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2140.274641][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2140.274644][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2140.274647][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2140.274652][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2140.274656][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2140.274659][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2140.274663][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2140.274667][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2140.274669][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2140.274673][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2140.274677][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2140.274681][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2140.274685][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2140.274690][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2140.274694][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2140.274698][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2140.274705][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2140.274710][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2140.274715][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2140.274720][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2140.274724][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2140.274728][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2140.274730][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2140.274734][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2140.274740][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2140.274744][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2140.274749][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2140.274752][    C3] RIP: 0033:0x7f439756d93b
[ 2140.274757][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2140.274760][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2140.274763][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2140.274765][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2140.274767][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2140.274768][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2140.274770][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2140.656138][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2140.656147][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2140.656151][ C0] softirqs last disabled at (0): 0x0 
| [ 2140.656164][    C0] Tainted: [L]=SOFTLOCKUP
[ 2140.656166][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2140.656168][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:89 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 2140.656175][ C0] Code: 11 80 38 00 74 ef 4d 8d 1c 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea eb 09 <48> 83 c0 01 48 39 d0 74 a5 80 38 00 74 f2 e9 74 ff ff ff b8 01 00
All code
========
   0:	11 80 38 00 74 ef    	adc    %eax,-0x108bffc8(%rax)
   6:	4d 8d 1c 2c          	lea    (%r12,%rbp,1),%r11
   a:	48 89 c2             	mov    %rax,%rdx
   d:	48 85 c0             	test   %rax,%rax
  10:	75 b0                	jne    0xffffffffffffffc2
  12:	48 89 da             	mov    %rbx,%rdx
  15:	4c 89 d8             	mov    %r11,%rax
  18:	4c 29 da             	sub    %r11,%rdx
  1b:	e9 49 ff ff ff       	jmp    0xffffffffffffff69
  20:	48 85 d2             	test   %rdx,%rdx
  23:	74 b3                	je     0xffffffffffffffd8
  25:	48 01 ea             	add    %rbp,%rdx
  28:	eb 09                	jmp    0x33
  2a:*	48 83 c0 01          	add    $0x1,%rax		<-- trapping instruction
  2e:	48 39 d0             	cmp    %rdx,%rax
  31:	74 a5                	je     0xffffffffffffffd8
  33:	80 38 00             	cmpb   $0x0,(%rax)
  36:	74 f2                	je     0x2a
  38:	e9 74 ff ff ff       	jmp    0xffffffffffffffb1
  3d:	b8                   	.byte 0xb8
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	48 83 c0 01          	add    $0x1,%rax
   4:	48 39 d0             	cmp    %rdx,%rax
   7:	74 a5                	je     0xffffffffffffffae
   9:	80 38 00             	cmpb   $0x0,(%rax)
   c:	74 f2                	je     0x0
   e:	e9 74 ff ff ff       	jmp    0xffffffffffffff87
  13:	b8                   	.byte 0xb8
  14:	01 00                	add    %eax,(%rax)
[ 2140.656179][    C0] RSP: 0018:ffffc900034c79f8 EFLAGS: 00000246
[ 2140.656182][    C0] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 2140.656184][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2140.656186][    C0] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2140.656189][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2140.656191][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2140.656193][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2140.656196][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2140.656200][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2140.656202][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2140.656204][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2140.656205][    C0] PKRU: 55555554
[ 2140.656207][    C0] Call Trace:
[ 2140.656212][    C0]  <TASK>
[ 2140.656216][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2140.656226][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2140.656230][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2140.656236][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2140.656240][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2140.656248][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2140.656251][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2140.656254][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2140.656257][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2140.656265][ C0] xa_store (lib/xarray.c:1734) 
[ 2140.656269][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2140.656274][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2140.656280][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2140.656283][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2140.656286][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2140.656293][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2140.656297][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2140.656305][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2140.656309][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2140.656314][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2140.656320][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2140.656325][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2140.656335][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2140.656339][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2140.656345][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2140.656350][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2140.656354][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2140.656359][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2140.656362][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2140.656366][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2140.656373][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2140.656377][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2140.656383][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2140.656388][    C0] RIP: 0033:0x7f439756d93b
[ 2140.656392][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2140.656395][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2140.656398][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2140.656400][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2140.656402][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2140.656404][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2140.656406][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2144.669140][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2144.669149][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2144.669153][ C2] softirqs last disabled at (0): 0x0 
| [ 2144.669167][    C2] Tainted: [L]=SOFTLOCKUP
[ 2144.669169][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2144.669172][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2144.669182][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2144.669187][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2144.669190][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2144.669192][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2144.669194][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2144.669196][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2144.669198][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2144.669200][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2144.669203][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2144.669208][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2144.669210][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2144.669212][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2144.669214][    C2] PKRU: 55555554
[ 2144.669215][    C2] Call Trace:
[ 2144.669220][    C2]  <TASK>
[ 2144.669225][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2144.669230][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2144.669235][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2144.669240][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2144.669247][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2144.669252][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2144.669255][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2144.669257][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2144.669265][ C2] xa_store (lib/xarray.c:1734) 
[ 2144.669270][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2144.669276][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2144.669281][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2144.669284][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2144.669287][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2144.669295][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2144.669298][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2144.669306][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2144.669310][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2144.669315][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2144.669323][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2144.669328][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2144.669338][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2144.669342][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2144.669348][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2144.669354][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2144.669357][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2144.669363][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2144.669366][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2144.669370][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2144.669377][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2144.669382][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2144.669388][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2144.669393][    C2] RIP: 0033:0x7f439756d93b
[ 2144.669399][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2144.669402][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2144.669405][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2144.669407][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2144.669409][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2144.669411][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2144.669413][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2164.669143][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2164.669153][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2164.669157][ C1] softirqs last disabled at (0): 0x0 
| [ 2164.669171][    C1] Tainted: [L]=SOFTLOCKUP
[ 2164.669173][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2164.669176][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2164.669186][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2164.669190][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2164.669193][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2164.669195][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2164.669197][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2164.669200][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2164.669202][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2164.669204][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2164.669207][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2164.669210][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2164.669213][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2164.669214][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2164.669216][    C1] PKRU: 55555554
[ 2164.669217][    C1] Call Trace:
[ 2164.669223][    C1]  <TASK>
[ 2164.669227][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2164.669231][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2164.669236][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2164.669241][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2164.669249][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2164.669253][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2164.669256][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2164.669259][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2164.669266][ C1] xa_store (lib/xarray.c:1734) 
[ 2164.669271][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2164.669277][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2164.669282][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2164.669285][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2164.669288][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2164.669296][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2164.669299][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2164.669307][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2164.669311][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2164.669316][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2164.669323][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2164.669328][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2164.669338][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2164.669342][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2164.669349][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2164.669354][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2164.669357][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2164.669363][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2164.669366][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2164.669370][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2164.669377][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2164.669382][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2164.669387][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2164.669393][    C1] RIP: 0033:0x7f439756d93b
[ 2164.669398][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2164.669401][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2164.669405][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2164.669407][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2164.669409][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2164.669411][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2164.669413][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2164.670135][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2164.670142][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2164.670146][ C3] softirqs last disabled at (0): 0x0 
| [ 2164.670158][    C3] Tainted: [L]=SOFTLOCKUP
[ 2164.670159][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2164.670162][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2164.670170][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2164.670173][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2164.670176][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2164.670179][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2164.670180][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2164.670182][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2164.670184][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2164.670186][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2164.670188][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2164.670192][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2164.670194][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2164.670196][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2164.670198][    C3] PKRU: 55555554
[ 2164.670199][    C3] Call Trace:
[ 2164.670203][    C3]  <IRQ>
[ 2164.670205][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2164.670210][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2164.670216][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2164.670219][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2164.670223][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2164.670228][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2164.670231][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2164.670235][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2164.670238][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2164.670242][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2164.670244][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2164.670247][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2164.670250][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2164.670256][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2164.670261][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2164.670264][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2164.670269][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2164.670274][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2164.670278][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2164.670283][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2164.670288][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2164.670294][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2164.670300][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2164.670303][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2164.670306][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2164.670309][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2164.670313][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2164.670315][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2164.670321][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2164.670324][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2164.670327][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2164.670332][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2164.670336][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2164.670339][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2164.670342][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2164.670346][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2164.670349][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2164.670354][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2164.670358][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2164.670361][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2164.670367][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2164.670370][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2164.670374][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2164.670379][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2164.670383][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2164.670389][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2164.670392][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2164.670396][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2164.670400][    C3]  </IRQ>
[ 2164.670401][    C3]  <TASK>
[ 2164.670403][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2164.670408][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2164.670411][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2164.670414][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2164.670417][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2164.670419][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2164.670421][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2164.670423][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2164.670425][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2164.670429][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2164.670435][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2164.670441][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2164.670445][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2164.670449][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2164.670452][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2164.670457][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2164.670459][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2164.670465][ C3] xas_alloc (lib/xarray.c:378) 
[ 2164.670470][ C3] xas_create (lib/xarray.c:685) 
[ 2164.670476][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2164.670480][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2164.670484][ C3] __xa_store (lib/xarray.c:1703) 
[ 2164.670488][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2164.670493][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2164.670495][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2164.670498][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2164.670503][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2164.670507][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2164.670518][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2164.670522][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2164.670525][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2164.670528][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2164.670532][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2164.670536][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2164.670540][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2164.670544][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2164.670549][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2164.670553][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2164.670558][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2164.670566][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2164.670570][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2164.670576][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2164.670580][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2164.670584][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2164.670587][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2164.670590][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2164.670594][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2164.670600][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2164.670604][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2164.670610][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2164.670613][    C3] RIP: 0033:0x7f439756d93b
[ 2164.670617][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2164.670620][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2164.670623][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2164.670626][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2164.670628][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2164.670630][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2164.670632][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2168.656138][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2168.656149][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2168.656153][ C0] softirqs last disabled at (0): 0x0 
| [ 2168.656167][    C0] Tainted: [L]=SOFTLOCKUP
[ 2168.656169][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2168.656171][ C0] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2168.656181][ C0] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2168.656185][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2168.656188][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2168.656190][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2168.656200][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2168.656203][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2168.656204][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2168.656207][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2168.656209][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2168.656213][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2168.656215][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2168.656217][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2168.656219][    C0] PKRU: 55555554
[ 2168.656220][    C0] Call Trace:
[ 2168.656224][    C0]  <TASK>
[ 2168.656228][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2168.656232][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2168.656238][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2168.656243][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2168.656251][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2168.656255][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2168.656258][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2168.656261][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2168.656268][ C0] xa_store (lib/xarray.c:1734) 
[ 2168.656273][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2168.656279][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2168.656284][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2168.656288][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2168.656290][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2168.656298][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2168.656302][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2168.656310][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2168.656313][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2168.656319][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2168.656326][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2168.656331][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2168.656340][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2168.656344][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2168.656351][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2168.656356][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2168.656360][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2168.656365][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2168.656368][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2168.656372][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2168.656379][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2168.656383][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2168.656390][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2168.656395][    C0] RIP: 0033:0x7f439756d93b
[ 2168.656399][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2168.656402][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2168.656405][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2168.656409][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2168.656411][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2168.656413][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2168.656415][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2172.669143][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2172.669153][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2172.669157][ C2] softirqs last disabled at (0): 0x0 
| [ 2172.669171][    C2] Tainted: [L]=SOFTLOCKUP
[ 2172.669173][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2172.669176][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:104 kernel/locking/qspinlock.c:141) 
[ 2172.669186][ C2] Code: c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44 24 40 <85> c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00 00 e8 60 b8 c7 fd be
All code
========
   0:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   4:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
   a:	48 89 ef             	mov    %rbp,%rdi
   d:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86f
  12:	41 0f b6 06          	movzbl (%r14),%eax
  16:	41 38 c5             	cmp    %al,%r13b
  19:	7c 08                	jl     0x23
  1b:	84 c0                	test   %al,%al
  1d:	0f 85 8d 07 00 00    	jne    0x7b0
  23:	8b 45 00             	mov    0x0(%rbp),%eax
  26:	89 44 24 40          	mov    %eax,0x40(%rsp)
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 6e 01 00 00    	jne    0x1a0
  32:	48 89 ef             	mov    %rbp,%rdi
  35:	be 04 00 00 00       	mov    $0x4,%esi
  3a:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b89f
  3f:	be                   	.byte 0xbe

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 6e 01 00 00    	jne    0x176
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	be 04 00 00 00       	mov    $0x4,%esi
  10:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b875
  15:	be                   	.byte 0xbe
[ 2172.669190][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000246
[ 2172.669193][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2172.669195][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2172.669198][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2172.669200][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2172.669202][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2172.669204][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2172.669206][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2172.669211][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2172.669213][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2172.669215][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2172.669216][    C2] PKRU: 55555554
[ 2172.669218][    C2] Call Trace:
[ 2172.669223][    C2]  <TASK>
[ 2172.669228][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2172.669232][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2172.669238][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2172.669243][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2172.669251][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2172.669255][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2172.669258][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2172.669261][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2172.669269][ C2] xa_store (lib/xarray.c:1734) 
[ 2172.669274][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2172.669280][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2172.669285][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2172.669289][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2172.669292][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2172.669299][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2172.669312][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2172.669320][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2172.669324][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2172.669329][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2172.669337][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2172.669343][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2172.669352][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2172.669356][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2172.669362][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2172.669368][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2172.669372][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2172.669377][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2172.669380][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2172.669384][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2172.669391][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2172.669395][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2172.669401][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2172.669407][    C2] RIP: 0033:0x7f439756d93b
[ 2172.669413][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2172.669416][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2172.669419][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2172.669421][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2172.669423][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2172.669425][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2172.669427][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2192.669150][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2192.669160][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2192.669164][ C1] softirqs last disabled at (0): 0x0 
| [ 2192.669176][    C1] Tainted: [L]=SOFTLOCKUP
[ 2192.669178][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2192.669181][ C1] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2192.669190][ C1] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2192.669194][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2192.669197][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2192.669200][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2192.669202][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2192.669204][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2192.669206][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2192.669208][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2192.669211][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2192.669215][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2192.669225][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2192.669227][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2192.669229][    C1] PKRU: 55555554
[ 2192.669230][    C1] Call Trace:
[ 2192.669235][    C1]  <TASK>
[ 2192.669239][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2192.669243][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2192.669249][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2192.669253][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2192.669261][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2192.669265][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2192.669268][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2192.669271][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2192.669278][ C1] xa_store (lib/xarray.c:1734) 
[ 2192.669283][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2192.669289][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2192.669294][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2192.669297][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2192.669300][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2192.669308][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2192.669312][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2192.669319][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2192.669323][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2192.669328][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2192.669336][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2192.669340][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2192.669349][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2192.669353][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2192.669360][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2192.669365][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2192.669368][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2192.669373][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2192.669376][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2192.669380][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2192.669387][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2192.669392][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2192.669398][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2192.669403][    C1] RIP: 0033:0x7f439756d93b
[ 2192.669408][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2192.669411][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2192.669414][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2192.669417][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2192.669419][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2192.669420][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2192.669422][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2192.670136][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2192.670143][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2192.670147][ C3] softirqs last disabled at (0): 0x0 
| [ 2192.670160][    C3] Tainted: [L]=SOFTLOCKUP
[ 2192.670162][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2192.670164][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 2192.670170][ C3] Code: 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff <5b> b8 01 00 00 00 5d 41 5c c3 cc cc cc cc 41 bc 08 00 00 00 45 29
All code
========
   0:	00 74 f2 48          	add    %dh,0x48(%rdx,%rsi,8)
   4:	89 c2                	mov    %eax,%edx
   6:	b8 01 00 00 00       	mov    $0x1,%eax
   b:	48 85 d2             	test   %rdx,%rdx
   e:	0f 84 4c ff ff ff    	je     0xffffffffffffff60
  14:	41 83 e2 07          	and    $0x7,%r10d
  18:	49 39 d1             	cmp    %rdx,%r9
  1b:	0f 85 34 ff ff ff    	jne    0xffffffffffffff55
  21:	45 3a 11             	cmp    (%r9),%r10b
  24:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff55
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	b8 01 00 00 00       	mov    $0x1,%eax
  30:	5d                   	pop    %rbp
  31:	41 5c                	pop    %r12
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  3e:	45                   	rex.RB
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	b8 01 00 00 00       	mov    $0x1,%eax
   6:	5d                   	pop    %rbp
   7:	41 5c                	pop    %r12
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  14:	45                   	rex.RB
  15:	29                   	.byte 0x29
[ 2192.670173][    C3] RSP: 0018:ffffc90000270a28 EFLAGS: 00000246
[ 2192.670177][    C3] RAX: fffffbfff77dcb81 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 2192.670179][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2192.670181][    C3] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2192.670183][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2192.670185][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2192.670187][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2192.670190][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2192.670194][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2192.670196][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2192.670197][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2192.670199][    C3] PKRU: 55555554
[ 2192.670200][    C3] Call Trace:
[ 2192.670204][    C3]  <IRQ>
[ 2192.670208][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2192.670215][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2192.670220][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2192.670224][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2192.670227][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2192.670232][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2192.670236][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2192.670239][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2192.670244][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2192.670247][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2192.670250][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2192.670253][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2192.670256][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2192.670259][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2192.670264][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2192.670269][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2192.670272][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2192.670275][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2192.670281][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2192.670285][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2192.670290][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2192.670295][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2192.670301][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2192.670306][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2192.670309][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2192.670312][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2192.670316][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2192.670319][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2192.670322][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2192.670328][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2192.670331][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2192.670334][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2192.670339][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2192.670343][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2192.670347][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2192.670349][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2192.670353][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2192.670356][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2192.670361][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2192.670365][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2192.670368][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2192.670374][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2192.670378][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2192.670381][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2192.670387][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2192.670391][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2192.670397][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2192.670401][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2192.670404][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2192.670408][    C3]  </IRQ>
[ 2192.670409][    C3]  <TASK>
[ 2192.670411][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2192.670416][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2192.670419][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2192.670422][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2192.670425][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2192.670427][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2192.670429][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2192.670431][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2192.670433][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2192.670437][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2192.670443][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2192.670449][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2192.670453][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2192.670457][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2192.670460][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2192.670465][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2192.670468][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2192.670473][ C3] xas_alloc (lib/xarray.c:378) 
[ 2192.670478][ C3] xas_create (lib/xarray.c:685) 
[ 2192.670485][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2192.670489][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2192.670493][ C3] __xa_store (lib/xarray.c:1703) 
[ 2192.670498][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2192.670503][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2192.670505][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2192.670508][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2192.670513][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2192.670517][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2192.670520][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2192.670525][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2192.670528][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2192.670531][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2192.670535][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2192.670538][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2192.670543][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2192.670547][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2192.670552][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2192.670556][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2192.670560][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2192.670568][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2192.670572][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2192.670578][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2192.670582][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2192.670585][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2192.670589][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2192.670591][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2192.670595][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2192.670601][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2192.670605][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2192.670610][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2192.670613][    C3] RIP: 0033:0x7f439756d93b
[ 2192.670617][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2192.670621][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2192.670623][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2192.670625][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2192.670627][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2192.670629][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2192.670631][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2196.656136][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2196.656144][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2196.656149][ C0] softirqs last disabled at (0): 0x0 
| [ 2196.656162][    C0] Tainted: [L]=SOFTLOCKUP
[ 2196.656164][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2196.656166][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2196.656175][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2196.656179][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2196.656182][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2196.656184][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2196.656187][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2196.656189][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2196.656191][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2196.656193][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2196.656196][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2196.656201][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2196.656203][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2196.656204][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2196.656206][    C0] PKRU: 55555554
[ 2196.656208][    C0] Call Trace:
[ 2196.656211][    C0]  <TASK>
[ 2196.656214][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2196.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2196.656224][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2196.656228][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2196.656236][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2196.656240][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2196.656243][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2196.656246][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2196.656253][ C0] xa_store (lib/xarray.c:1734) 
[ 2196.656257][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2196.656263][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2196.656268][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2196.656272][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2196.656275][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2196.656281][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2196.656285][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2196.656293][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2196.656297][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2196.656302][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2196.656308][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2196.656313][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2196.656322][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2196.656326][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2196.656332][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2196.656337][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2196.656340][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2196.656345][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2196.656349][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2196.656353][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2196.656360][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2196.656364][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2196.656369][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2196.656374][    C0] RIP: 0033:0x7f439756d93b
[ 2196.656378][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2196.656381][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2196.656384][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2196.656387][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2196.656389][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2196.656391][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2196.656393][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2200.669142][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2200.669151][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2200.669155][ C2] softirqs last disabled at (0): 0x0 
| [ 2200.669168][    C2] Tainted: [L]=SOFTLOCKUP
[ 2200.669170][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2200.669173][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2200.669183][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2200.669186][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2200.669190][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2200.669192][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2200.669194][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2200.669196][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2200.669198][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2200.669200][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2200.669203][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2200.669207][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2200.669209][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2200.669211][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2200.669213][    C2] PKRU: 55555554
[ 2200.669214][    C2] Call Trace:
[ 2200.669220][    C2]  <TASK>
[ 2200.669225][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2200.669230][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2200.669235][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2200.669240][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2200.669248][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2200.669251][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2200.669255][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2200.669258][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2200.669265][ C2] xa_store (lib/xarray.c:1734) 
[ 2200.669270][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2200.669276][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2200.669281][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2200.669284][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2200.669287][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2200.669295][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2200.669298][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2200.669306][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2200.669310][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2200.669315][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2200.669322][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2200.669327][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2200.669336][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2200.669340][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2200.669347][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2200.669352][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2200.669355][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2200.669361][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2200.669364][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2200.669368][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2200.669375][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2200.669379][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2200.669385][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2200.669391][    C2] RIP: 0033:0x7f439756d93b
[ 2200.669397][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2200.669400][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2200.669403][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2200.669405][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2200.669407][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2200.669409][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2200.669411][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2218.286954][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 2218.287231][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 2218.287474][    C1] NMI backtrace for cpu 1
| [ 2218.287495][    C1] Tainted: [L]=SOFTLOCKUP
[ 2218.287496][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2218.287499][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2218.287511][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2218.287516][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2218.287520][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2218.287522][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2218.287524][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2218.287526][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2218.287529][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2218.287531][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2218.287533][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2218.287537][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2218.287539][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2218.287541][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2218.287543][    C1] PKRU: 55555554
[ 2218.287544][    C1] Call Trace:
[ 2218.287548][    C1]  <TASK>
[ 2218.287552][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2218.287556][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2218.287562][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2218.287566][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2218.287574][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2218.287577][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2218.287580][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2218.287583][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2218.287591][ C1] xa_store (lib/xarray.c:1734) 
[ 2218.287595][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2218.287601][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2218.287606][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2218.287610][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2218.287619][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2218.287625][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2218.287628][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2218.287636][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2218.287640][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2218.287645][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2218.287653][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2218.287657][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2218.287667][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2218.287671][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2218.287678][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2218.287685][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2218.287689][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2218.287694][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2218.287697][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2218.287701][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2218.287709][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2218.287713][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2218.287719][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2218.287724][    C1] RIP: 0033:0x7f439756d93b
[ 2218.287728][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2218.287731][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2218.287735][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2218.287737][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2218.287739][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2218.287740][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2218.287743][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2218.287740][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 2218.287743][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2218.287748][    C1]  </TASK>
| [ 2218.288479][    C3] Tainted: [L]=SOFTLOCKUP
[ 2218.288480][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2218.288482][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2218.288489][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2218.288493][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2218.288496][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2218.288498][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2218.288501][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2218.288503][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2218.288505][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2218.288507][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2218.288509][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2218.288513][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2218.288516][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2218.288517][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2218.288519][    C3] PKRU: 55555554
[ 2218.288520][    C3] Call Trace:
[ 2218.288522][    C3]  <IRQ>
[ 2218.288523][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2218.288528][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2218.288533][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2218.288536][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2218.288540][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2218.288544][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2218.288548][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2218.288552][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2218.288554][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2218.288558][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2218.288560][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2218.288563][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2218.288566][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2218.288572][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2218.288576][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2218.288579][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2218.288582][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2218.288588][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2218.288591][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2218.288596][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2218.288600][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2218.288606][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2218.288611][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2218.288614][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2218.288617][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2218.288620][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2218.288624][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2218.288627][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2218.288633][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2218.288637][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2218.288640][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2218.288644][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2218.288648][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2218.288652][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2218.288654][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2218.288658][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2218.288661][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2218.288666][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2218.288670][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2218.288673][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2218.288678][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2218.288682][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2218.288686][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2218.288690][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2218.288695][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2218.288700][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2218.288704][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2218.288707][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2218.288710][    C3]  </IRQ>
[ 2218.288712][    C3]  <TASK>
[ 2218.288714][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2218.288718][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2218.288721][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2218.288724][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2218.288726][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2218.288728][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2218.288730][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2218.288731][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2218.288733][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2218.288737][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2218.288743][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2218.288748][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2218.288752][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2218.288756][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2218.288759][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2218.288763][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2218.288766][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2218.288771][ C3] xas_alloc (lib/xarray.c:378) 
[ 2218.288775][ C3] xas_create (lib/xarray.c:685) 
[ 2218.288781][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2218.288785][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2218.288789][ C3] __xa_store (lib/xarray.c:1703) 
[ 2218.288793][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2218.288798][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2218.288801][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2218.288804][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2218.288810][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2218.288814][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2218.288817][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2218.288822][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2218.288825][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2218.288828][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2218.288832][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2218.288835][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2218.288841][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2218.288844][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2218.288849][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2218.288853][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2218.288858][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2218.288864][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2218.288868][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2218.288874][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2218.288879][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2218.288882][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2218.288886][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2218.288888][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2218.288892][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2218.288898][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2218.288902][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2218.288907][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2218.288910][    C3] RIP: 0033:0x7f439756d93b
[ 2218.288914][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2218.288917][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2218.288920][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2218.288922][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2218.288923][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2218.288925][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2218.288926][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2224.656138][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2224.656148][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2224.656151][ C0] softirqs last disabled at (0): 0x0 
| [ 2224.656165][    C0] Tainted: [L]=SOFTLOCKUP
[ 2224.656167][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2224.656170][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2224.656179][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2224.656183][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2224.656187][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2224.656189][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2224.656191][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2224.656193][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2224.656196][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2224.656198][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2224.656201][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2224.656204][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2224.656206][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2224.656208][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2224.656210][    C0] PKRU: 55555554
[ 2224.656211][    C0] Call Trace:
[ 2224.656215][    C0]  <TASK>
[ 2224.656218][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2224.656223][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2224.656228][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2224.656233][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2224.656241][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2224.656245][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2224.656248][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2224.656251][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2224.656258][ C0] xa_store (lib/xarray.c:1734) 
[ 2224.656263][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2224.656268][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2224.656273][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2224.656276][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2224.656280][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2224.656287][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2224.656290][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2224.656298][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2224.656302][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2224.656307][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2224.656314][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2224.656319][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2224.656329][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2224.656333][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2224.656340][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2224.656345][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2224.656348][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2224.656353][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2224.656357][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2224.656360][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2224.656368][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2224.656372][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2224.656378][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2224.656384][    C0] RIP: 0033:0x7f439756d93b
[ 2224.656389][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2224.656392][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2224.656395][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2224.656397][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2224.656399][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2224.656401][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2224.656403][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2228.669141][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2228.669150][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2228.669154][ C2] softirqs last disabled at (0): 0x0 
| [ 2228.669167][    C2] Tainted: [L]=SOFTLOCKUP
[ 2228.669169][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2228.669172][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2228.669181][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2228.669185][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2228.669189][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2228.669191][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2228.669193][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2228.669195][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2228.669197][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2228.669200][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2228.669202][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2228.669207][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2228.669209][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2228.669210][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2228.669212][    C2] PKRU: 55555554
[ 2228.669213][    C2] Call Trace:
[ 2228.669219][    C2]  <TASK>
[ 2228.669223][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2228.669227][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2228.669233][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2228.669238][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2228.669245][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2228.669250][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2228.669253][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2228.669255][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2228.669263][ C2] xa_store (lib/xarray.c:1734) 
[ 2228.669267][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2228.669274][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2228.669279][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2228.669282][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2228.669285][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2228.669292][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2228.669296][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2228.669303][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2228.669307][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2228.669312][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2228.669319][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2228.669324][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2228.669333][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2228.669337][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2228.669344][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2228.669349][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2228.669353][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2228.669357][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2228.669361][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2228.669365][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2228.669372][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2228.669376][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2228.669382][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2228.669387][    C2] RIP: 0033:0x7f439756d93b
[ 2228.669393][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2228.669395][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2228.669399][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2228.669401][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2228.669403][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2228.669405][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2228.669407][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2244.669142][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2244.669152][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2244.669156][ C1] softirqs last disabled at (0): 0x0 
| [ 2244.669169][    C1] Tainted: [L]=SOFTLOCKUP
[ 2244.669171][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2244.669174][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2244.669184][ C1] Code: 00 00 fc ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 <8b> 45 00 89 44 24 40 85 c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	fc                   	cld
   3:	ff                   	lcall  (bad)
   4:	df 49 01             	fisttps 0x1(%rcx)
   7:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   b:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
  11:	48 89 ef             	mov    %rbp,%rdi
  14:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b876
  19:	41 0f b6 06          	movzbl (%r14),%eax
  1d:	41 38 c5             	cmp    %al,%r13b
  20:	7c 08                	jl     0x2a
  22:	84 c0                	test   %al,%al
  24:	0f 85 8d 07 00 00    	jne    0x7b7
  2a:*	8b 45 00             	mov    0x0(%rbp),%eax		<-- trapping instruction
  2d:	89 44 24 40          	mov    %eax,0x40(%rsp)
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 6e 01 00 00    	jne    0x1a7
  39:	48 89 ef             	mov    %rbp,%rdi
  3c:	be                   	.byte 0xbe
  3d:	04 00                	add    $0x0,%al
	...

Code starting with the faulting instruction
===========================================
   0:	8b 45 00             	mov    0x0(%rbp),%eax
   3:	89 44 24 40          	mov    %eax,0x40(%rsp)
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 6e 01 00 00    	jne    0x17d
   f:	48 89 ef             	mov    %rbp,%rdi
  12:	be                   	.byte 0xbe
  13:	04 00                	add    $0x0,%al
	...
[ 2244.669187][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000246
[ 2244.669191][    C1] RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2244.669193][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2244.669196][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2244.669197][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2244.669200][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2244.669202][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2244.669205][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2244.669209][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2244.669211][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2244.669212][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2244.669214][    C1] PKRU: 55555554
[ 2244.669216][    C1] Call Trace:
[ 2244.669220][    C1]  <TASK>
[ 2244.669224][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2244.669228][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2244.669234][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2244.669238][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2244.669246][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2244.669250][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2244.669253][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2244.669256][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2244.669263][ C1] xa_store (lib/xarray.c:1734) 
[ 2244.669268][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2244.669274][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2244.669279][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2244.669282][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2244.669285][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2244.669292][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2244.669295][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2244.669303][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2244.669307][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2244.669312][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2244.669320][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2244.669325][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2244.669334][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2244.669338][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2244.669345][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2244.669350][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2244.669353][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2244.669358][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2244.669362][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2244.669365][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2244.669373][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2244.669377][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2244.669383][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2244.669389][    C1] RIP: 0033:0x7f439756d93b
[ 2244.669394][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2244.669397][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2244.669400][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2244.669402][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2244.669405][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2244.669406][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2244.669409][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2244.670135][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2244.670142][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2244.670145][ C3] softirqs last disabled at (0): 0x0 
| [ 2244.670157][    C3] Tainted: [L]=SOFTLOCKUP
[ 2244.670159][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2244.670161][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2244.670168][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2244.670171][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2244.670174][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2244.670176][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2244.670178][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2244.670180][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2244.670182][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2244.670184][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2244.670186][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2244.670190][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2244.670192][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2244.670193][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2244.670195][    C3] PKRU: 55555554
[ 2244.670196][    C3] Call Trace:
[ 2244.670200][    C3]  <IRQ>
[ 2244.670202][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2244.670209][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2244.670214][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2244.670217][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2244.670221][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2244.670226][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2244.670229][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2244.670233][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2244.670236][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2244.670239][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2244.670242][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2244.670244][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2244.670247][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2244.670253][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2244.670258][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2244.670261][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2244.670265][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2244.670270][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2244.670274][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2244.670279][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2244.670284][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2244.670290][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2244.670295][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2244.670298][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2244.670301][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2244.670304][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2244.670308][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2244.670311][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2244.670317][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2244.670320][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2244.670323][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2244.670327][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2244.670332][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2244.670335][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2244.670338][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2244.670342][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2244.670346][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2244.670350][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2244.670354][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2244.670357][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2244.670363][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2244.670367][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2244.670370][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2244.670375][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2244.670379][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2244.670385][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2244.670388][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2244.670392][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2244.670395][    C3]  </IRQ>
[ 2244.670397][    C3]  <TASK>
[ 2244.670398][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2244.670403][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2244.670406][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2244.670409][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2244.670411][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2244.670414][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2244.670416][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2244.670418][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2244.670420][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2244.670424][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2244.670430][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2244.670435][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2244.670439][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2244.670453][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2244.670456][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2244.670461][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2244.670463][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2244.670469][ C3] xas_alloc (lib/xarray.c:378) 
[ 2244.670474][ C3] xas_create (lib/xarray.c:685) 
[ 2244.670480][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2244.670485][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2244.670488][ C3] __xa_store (lib/xarray.c:1703) 
[ 2244.670492][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2244.670497][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2244.670500][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2244.670503][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2244.670508][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2244.670513][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2244.670516][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2244.670521][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2244.670524][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2244.670526][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2244.670530][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2244.670533][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2244.670538][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2244.670542][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2244.670547][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2244.670551][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2244.670555][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2244.670563][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2244.670567][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2244.670572][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2244.670576][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2244.670580][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2244.670583][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2244.670586][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2244.670589][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2244.670595][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2244.670599][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2244.670604][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2244.670607][    C3] RIP: 0033:0x7f439756d93b
[ 2244.670611][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2244.670614][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2244.670617][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2244.670619][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2244.670621][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2244.670623][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2244.670625][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2252.656136][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2252.656145][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2252.656149][ C0] softirqs last disabled at (0): 0x0 
| [ 2252.656163][    C0] Tainted: [L]=SOFTLOCKUP
[ 2252.656165][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2252.656167][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2252.656177][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2252.656180][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2252.656183][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2252.656185][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2252.656187][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2252.656190][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2252.656192][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2252.656194][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2252.656197][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2252.656201][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2252.656203][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2252.656205][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2252.656207][    C0] PKRU: 55555554
[ 2252.656208][    C0] Call Trace:
[ 2252.656212][    C0]  <TASK>
[ 2252.656216][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2252.656220][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2252.656226][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2252.656230][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2252.656238][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2252.656241][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2252.656244][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2252.656247][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2252.656254][ C0] xa_store (lib/xarray.c:1734) 
[ 2252.656259][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2252.656264][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2252.656269][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2252.656272][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2252.656276][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2252.656282][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2252.656286][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2252.656293][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2252.656297][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2252.656303][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2252.656310][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2252.656314][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2252.656332][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2252.656336][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2252.656343][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2252.656348][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2252.656352][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2252.656356][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2252.656360][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2252.656364][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2252.656371][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2252.656375][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2252.656382][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2252.656387][    C0] RIP: 0033:0x7f439756d93b
[ 2252.656393][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2252.656395][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2252.656398][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2252.656401][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2252.656402][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2252.656405][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2252.656407][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2256.669141][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2256.669150][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2256.669154][ C2] softirqs last disabled at (0): 0x0 
| [ 2256.669168][    C2] Tainted: [L]=SOFTLOCKUP
[ 2256.669169][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2256.669172][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2256.669182][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2256.669185][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2256.669189][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2256.669191][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2256.669193][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2256.669195][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2256.669197][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2256.669200][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2256.669202][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2256.669206][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2256.669209][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2256.669210][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2256.669212][    C2] PKRU: 55555554
[ 2256.669213][    C2] Call Trace:
[ 2256.669218][    C2]  <TASK>
[ 2256.669233][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2256.669238][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2256.669243][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2256.669248][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2256.669256][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2256.669260][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2256.669263][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2256.669266][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2256.669274][ C2] xa_store (lib/xarray.c:1734) 
[ 2256.669279][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2256.669285][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2256.669291][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2256.669294][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2256.669297][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2256.669304][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2256.669308][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2256.669315][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2256.669319][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2256.669324][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2256.669332][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2256.669337][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2256.669346][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2256.669350][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2256.669357][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2256.669362][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2256.669366][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2256.669370][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2256.669374][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2256.669378][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2256.669385][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2256.669389][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2256.669395][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2256.669400][    C2] RIP: 0033:0x7f439756d93b
[ 2256.669406][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2256.669408][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2256.669411][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2256.669414][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2256.669415][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2256.669418][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2256.669419][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2272.669140][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2272.669150][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2272.669159][ C1] softirqs last disabled at (0): 0x0 
| [ 2272.669173][    C1] Tainted: [L]=SOFTLOCKUP
[ 2272.669175][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2272.669178][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2272.669189][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2272.669192][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2272.669195][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2272.669197][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2272.669200][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2272.669202][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2272.669204][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2272.669206][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2272.669209][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2272.669212][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2272.669214][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2272.669216][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2272.669217][    C1] PKRU: 55555554
[ 2272.669219][    C1] Call Trace:
[ 2272.669223][    C1]  <TASK>
[ 2272.669227][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2272.669232][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2272.669237][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2272.669242][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2272.669250][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2272.669253][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2272.669256][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2272.669259][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2272.669266][ C1] xa_store (lib/xarray.c:1734) 
[ 2272.669271][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2272.669277][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2272.669283][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2272.669285][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2272.669289][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2272.669296][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2272.669299][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2272.669307][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2272.669311][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2272.669316][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2272.669324][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2272.669329][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2272.669339][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2272.669343][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2272.669350][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2272.669355][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2272.669359][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2272.669366][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2272.669370][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2272.669373][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2272.669381][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2272.669385][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2272.669391][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2272.669397][    C1] RIP: 0033:0x7f439756d93b
[ 2272.669402][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2272.669405][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2272.669408][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2272.669410][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2272.669412][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2272.669414][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2272.669416][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2272.670135][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2272.670144][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2272.670147][ C3] softirqs last disabled at (0): 0x0 
| [ 2272.670159][    C3] Tainted: [L]=SOFTLOCKUP
[ 2272.670160][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2272.670163][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:89 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 2272.670168][ C3] Code: 11 80 38 00 74 ef 4d 8d 1c 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea eb 09 <48> 83 c0 01 48 39 d0 74 a5 80 38 00 74 f2 e9 74 ff ff ff b8 01 00
All code
========
   0:	11 80 38 00 74 ef    	adc    %eax,-0x108bffc8(%rax)
   6:	4d 8d 1c 2c          	lea    (%r12,%rbp,1),%r11
   a:	48 89 c2             	mov    %rax,%rdx
   d:	48 85 c0             	test   %rax,%rax
  10:	75 b0                	jne    0xffffffffffffffc2
  12:	48 89 da             	mov    %rbx,%rdx
  15:	4c 89 d8             	mov    %r11,%rax
  18:	4c 29 da             	sub    %r11,%rdx
  1b:	e9 49 ff ff ff       	jmp    0xffffffffffffff69
  20:	48 85 d2             	test   %rdx,%rdx
  23:	74 b3                	je     0xffffffffffffffd8
  25:	48 01 ea             	add    %rbp,%rdx
  28:	eb 09                	jmp    0x33
  2a:*	48 83 c0 01          	add    $0x1,%rax		<-- trapping instruction
  2e:	48 39 d0             	cmp    %rdx,%rax
  31:	74 a5                	je     0xffffffffffffffd8
  33:	80 38 00             	cmpb   $0x0,(%rax)
  36:	74 f2                	je     0x2a
  38:	e9 74 ff ff ff       	jmp    0xffffffffffffffb1
  3d:	b8                   	.byte 0xb8
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	48 83 c0 01          	add    $0x1,%rax
   4:	48 39 d0             	cmp    %rdx,%rax
   7:	74 a5                	je     0xffffffffffffffae
   9:	80 38 00             	cmpb   $0x0,(%rax)
   c:	74 f2                	je     0x0
   e:	e9 74 ff ff ff       	jmp    0xffffffffffffff87
  13:	b8                   	.byte 0xb8
  14:	01 00                	add    %eax,(%rax)
[ 2272.670171][    C3] RSP: 0018:ffffc90000270a28 EFLAGS: 00000246
[ 2272.670174][    C3] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 2272.670177][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2272.670179][    C3] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2272.670180][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2272.670182][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2272.670185][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2272.670187][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2272.670191][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2272.670193][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2272.670194][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2272.670196][    C3] PKRU: 55555554
[ 2272.670197][    C3] Call Trace:
[ 2272.670201][    C3]  <IRQ>
[ 2272.670204][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2272.670212][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2272.670216][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2272.670220][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2272.670223][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2272.670228][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2272.670237][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2272.670241][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2272.670245][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2272.670248][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2272.670252][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2272.670254][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2272.670257][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2272.670260][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2272.670265][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2272.670270][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2272.670273][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2272.670277][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2272.670282][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2272.670286][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2272.670292][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2272.670296][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2272.670302][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2272.670308][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2272.670311][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2272.670314][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2272.670317][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2272.670321][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2272.670323][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2272.670329][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2272.670332][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2272.670335][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2272.670340][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2272.670345][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2272.670348][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2272.670351][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2272.670354][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2272.670357][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2272.670362][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2272.670366][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2272.670369][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2272.670375][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2272.670378][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2272.670382][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2272.670387][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2272.670391][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2272.670398][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2272.670401][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2272.670405][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2272.670409][    C3]  </IRQ>
[ 2272.670411][    C3]  <TASK>
[ 2272.670412][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2272.670419][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2272.670422][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2272.670425][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2272.670428][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2272.670430][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2272.670432][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2272.670434][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2272.670436][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2272.670440][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2272.670446][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2272.670451][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2272.670455][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2272.670460][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2272.670463][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2272.670467][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2272.670470][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2272.670475][ C3] xas_alloc (lib/xarray.c:378) 
[ 2272.670480][ C3] xas_create (lib/xarray.c:685) 
[ 2272.670486][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2272.670491][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2272.670495][ C3] __xa_store (lib/xarray.c:1703) 
[ 2272.670499][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2272.670504][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2272.670507][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2272.670510][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2272.670515][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2272.670518][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2272.670522][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2272.670527][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2272.670529][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2272.670532][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2272.670536][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2272.670540][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2272.670545][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2272.670549][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2272.670553][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2272.670557][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2272.670562][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2272.670570][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2272.670573][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2272.670579][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2272.670583][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2272.670587][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2272.670590][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2272.670593][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2272.670596][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2272.670603][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2272.670606][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2272.670612][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2272.670615][    C3] RIP: 0033:0x7f439756d93b
[ 2272.670619][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2272.670623][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2272.670626][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2272.670628][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2272.670630][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2272.670632][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2272.670635][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2280.656139][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2280.656148][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2280.656152][ C0] softirqs last disabled at (0): 0x0 
| [ 2280.656167][    C0] Tainted: [L]=SOFTLOCKUP
[ 2280.656168][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2280.656171][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2280.656181][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2280.656184][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2280.656187][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2280.656190][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2280.656192][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2280.656194][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2280.656196][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2280.656198][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2280.656201][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2280.656205][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2280.656207][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2280.656209][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2280.656211][    C0] PKRU: 55555554
[ 2280.656212][    C0] Call Trace:
[ 2280.656216][    C0]  <TASK>
[ 2280.656220][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2280.656224][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2280.656230][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2280.656235][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2280.656243][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2280.656246][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2280.656249][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2280.656252][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2280.656259][ C0] xa_store (lib/xarray.c:1734) 
[ 2280.656263][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2280.656269][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2280.656275][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2280.656278][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2280.656281][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2280.656288][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2280.656292][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2280.656299][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2280.656303][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2280.656308][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2280.656316][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2280.656320][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2280.656329][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2280.656333][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2280.656340][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2280.656345][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2280.656349][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2280.656354][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2280.656357][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2280.656361][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2280.656368][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2280.656372][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2280.656378][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2280.656383][    C0] RIP: 0033:0x7f439756d93b
[ 2280.656388][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2280.656391][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2280.656394][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2280.656396][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2280.656398][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2280.656400][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2280.656402][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2284.669141][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2284.669150][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2284.669154][ C2] softirqs last disabled at (0): 0x0 
| [ 2284.669167][    C2] Tainted: [L]=SOFTLOCKUP
[ 2284.669169][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2284.669172][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2284.669182][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2284.669185][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2284.669189][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2284.669191][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2284.669193][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2284.669195][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2284.669197][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2284.669199][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2284.669202][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2284.669206][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2284.669208][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2284.669210][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2284.669212][    C2] PKRU: 55555554
[ 2284.669213][    C2] Call Trace:
[ 2284.669219][    C2]  <TASK>
[ 2284.669223][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2284.669228][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2284.669233][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2284.669238][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2284.669246][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2284.669251][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2284.669254][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2284.669257][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2284.669264][ C2] xa_store (lib/xarray.c:1734) 
[ 2284.669269][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2284.669275][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2284.669281][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2284.669284][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2284.669287][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2284.669293][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2284.669297][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2284.669305][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2284.669309][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2284.669314][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2284.669321][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2284.669326][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2284.669336][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2284.669340][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2284.669347][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2284.669352][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2284.669356][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2284.669361][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2284.669364][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2284.669368][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2284.669375][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2284.669379][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2284.669385][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2284.669391][    C2] RIP: 0033:0x7f439756d93b
[ 2284.669396][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2284.669399][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2284.669402][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2284.669405][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2284.669407][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2284.669409][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2284.669411][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2296.300679][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 2296.300966][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 2296.301207][    C1] NMI backtrace for cpu 1
| [ 2296.301227][    C1] Tainted: [L]=SOFTLOCKUP
[ 2296.301229][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2296.301232][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2296.301244][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2296.301248][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2296.301252][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2296.301254][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2296.301256][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2296.301259][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2296.301261][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2296.301263][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2296.301265][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2296.301269][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2296.301271][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2296.301272][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2296.301274][    C1] PKRU: 55555554
[ 2296.301275][    C1] Call Trace:
[ 2296.301278][    C1]  <TASK>
[ 2296.301281][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2296.301285][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2296.301291][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2296.301295][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2296.301303][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2296.301306][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2296.301309][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2296.301312][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2296.301319][ C1] xa_store (lib/xarray.c:1734) 
[ 2296.301323][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2296.301328][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2296.301334][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2296.301336][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2296.301340][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2296.301346][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2296.301350][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2296.301357][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2296.301362][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2296.301367][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2296.301375][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2296.301379][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2296.301389][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2296.301392][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2296.301399][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2296.301406][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2296.301410][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2296.301414][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2296.301418][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2296.301423][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2296.301430][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2296.301434][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2296.301440][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2296.301445][    C1] RIP: 0033:0x7f439756d93b
[ 2296.301450][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2296.301453][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2296.301456][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2296.301458][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2296.301460][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2296.301462][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2296.301464][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2296.301462][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 2296.301464][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2296.301470][    C1]  </TASK>
| [ 2296.302209][    C3] Tainted: [L]=SOFTLOCKUP
[ 2296.302210][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2296.302212][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2296.302218][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2296.302221][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2296.302224][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2296.302227][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2296.302228][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2296.302230][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2296.302232][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2296.302235][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2296.302237][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2296.302241][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2296.302243][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2296.302245][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2296.302247][    C3] PKRU: 55555554
[ 2296.302248][    C3] Call Trace:
[ 2296.302249][    C3]  <IRQ>
[ 2296.302251][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2296.302256][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2296.302260][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2296.302263][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2296.302267][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2296.302272][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2296.302275][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2296.302279][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2296.302282][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2296.302285][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2296.302287][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2296.302290][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2296.302293][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2296.302298][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2296.302302][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2296.302305][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2296.302308][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2296.302314][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2296.302317][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2296.302323][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2296.302327][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2296.302333][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2296.302338][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2296.302341][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2296.302344][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2296.302347][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2296.302351][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2296.302353][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2296.302359][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2296.302362][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2296.302365][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2296.302370][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2296.302373][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2296.302377][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2296.302380][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2296.302383][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2296.302386][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2296.302391][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2296.302395][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2296.302398][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2296.302403][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2296.302407][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2296.302410][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2296.302415][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2296.302419][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2296.302424][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2296.302427][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2296.302430][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2296.302434][    C3]  </IRQ>
[ 2296.302435][    C3]  <TASK>
[ 2296.302436][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2296.302440][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2296.302443][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2296.302446][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2296.302448][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2296.302450][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2296.302452][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2296.302453][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2296.302455][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2296.302459][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2296.302464][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2296.302470][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2296.302473][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2296.302477][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2296.302480][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2296.302484][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2296.302487][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2296.302491][ C3] xas_alloc (lib/xarray.c:378) 
[ 2296.302496][ C3] xas_create (lib/xarray.c:685) 
[ 2296.302501][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2296.302506][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2296.302509][ C3] __xa_store (lib/xarray.c:1703) 
[ 2296.302513][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2296.302518][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2296.302520][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2296.302523][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2296.302528][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2296.302532][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2296.302535][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2296.302540][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2296.302543][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2296.302545][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2296.302549][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2296.302553][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2296.302558][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2296.302561][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2296.302566][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2296.302570][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2296.302574][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2296.302580][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2296.302584][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2296.302589][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2296.302594][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2296.302597][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2296.302601][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2296.302603][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2296.302607][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2296.302613][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2296.302616][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2296.302621][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2296.302624][    C3] RIP: 0033:0x7f439756d93b
[ 2296.302628][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2296.302630][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2296.302633][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2296.302635][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2296.302637][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2296.302638][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2296.302640][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2308.656137][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2308.656147][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2308.656151][ C0] softirqs last disabled at (0): 0x0 
| [ 2308.656164][    C0] Tainted: [L]=SOFTLOCKUP
[ 2308.656166][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2308.656168][ C0] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 2308.656176][ C0] Code: 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 7b 44 8d ff       	jmp    0xffffffffff8d4482
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 2308.656180][    C0] RSP: 0018:ffffc900034c7a10 EFLAGS: 00000202
[ 2308.656183][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2308.656185][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2308.656188][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2308.656190][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2308.656192][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2308.656194][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2308.656197][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2308.656201][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2308.656203][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2308.656205][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2308.656206][    C0] PKRU: 55555554
[ 2308.656208][    C0] Call Trace:
[ 2308.656212][    C0]  <TASK>
[ 2308.656214][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2308.656225][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2308.656228][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2308.656234][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2308.656238][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2308.656246][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2308.656249][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2308.656252][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2308.656255][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2308.656262][ C0] xa_store (lib/xarray.c:1734) 
[ 2308.656267][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2308.656272][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2308.656278][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2308.656281][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2308.656284][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2308.656291][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2308.656295][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2308.656302][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2308.656306][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2308.656311][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2308.656319][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2308.656323][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2308.656333][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2308.656337][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2308.656344][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2308.656348][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2308.656352][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2308.656357][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2308.656360][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2308.656364][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2308.656371][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2308.656375][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2308.656381][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2308.656386][    C0] RIP: 0033:0x7f439756d93b
[ 2308.656391][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2308.656394][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2308.656397][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2308.656399][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2308.656402][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2308.656404][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2308.656405][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2312.669142][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2312.669152][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2312.669156][ C2] softirqs last disabled at (0): 0x0 
| [ 2312.669169][    C2] Tainted: [L]=SOFTLOCKUP
[ 2312.669171][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2312.669174][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2312.669184][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2312.669188][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2312.669192][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2312.669194][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2312.669196][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2312.669199][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2312.669201][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2312.669203][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2312.669205][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2312.669210][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2312.669212][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2312.669213][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2312.669215][    C2] PKRU: 55555554
[ 2312.669217][    C2] Call Trace:
[ 2312.669222][    C2]  <TASK>
[ 2312.669227][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2312.669231][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2312.669236][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2312.669241][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2312.669249][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2312.669253][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2312.669256][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2312.669259][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2312.669266][ C2] xa_store (lib/xarray.c:1734) 
[ 2312.669270][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2312.669277][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2312.669282][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2312.669285][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2312.669288][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2312.669295][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2312.669299][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2312.669307][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2312.669310][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2312.669315][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2312.669323][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2312.669327][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2312.669337][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2312.669341][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2312.669348][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2312.669353][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2312.669356][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2312.669361][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2312.669365][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2312.669369][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2312.669376][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2312.669380][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2312.669386][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2312.669392][    C2] RIP: 0033:0x7f439756d93b
[ 2312.669397][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2312.669400][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2312.669404][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2312.669406][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2312.669408][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2312.669410][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2312.669411][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2320.669140][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2320.669149][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2320.669153][ C1] softirqs last disabled at (0): 0x0 
| [ 2320.669167][    C1] Tainted: [L]=SOFTLOCKUP
[ 2320.669168][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2320.669171][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2320.669181][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2320.669185][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2320.669188][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2320.669191][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2320.669193][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2320.669195][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2320.669197][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2320.669199][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2320.669202][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2320.669205][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2320.669207][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2320.669209][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2320.669211][    C1] PKRU: 55555554
[ 2320.669212][    C1] Call Trace:
[ 2320.669216][    C1]  <TASK>
[ 2320.669220][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2320.669224][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2320.669230][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2320.669234][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2320.669242][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2320.669245][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2320.669248][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2320.669251][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2320.669258][ C1] xa_store (lib/xarray.c:1734) 
[ 2320.669262][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2320.669268][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2320.669274][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2320.669276][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2320.669279][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2320.669286][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2320.669290][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2320.669298][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2320.669302][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2320.669307][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2320.669314][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2320.669319][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2320.669328][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2320.669333][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2320.669340][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2320.669345][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2320.669349][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2320.669354][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2320.669358][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2320.669361][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2320.669369][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2320.669373][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2320.669379][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2320.669384][    C1] RIP: 0033:0x7f439756d93b
[ 2320.669389][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2320.669392][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2320.669395][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2320.669397][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2320.669399][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2320.669401][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2320.669403][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2320.670134][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2320.670142][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2320.670146][ C3] softirqs last disabled at (0): 0x0 
| [ 2320.670158][    C3] Tainted: [L]=SOFTLOCKUP
[ 2320.670160][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2320.670163][ C3] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 2320.670170][ C3] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 2320.670174][    C3] RSP: 0018:ffffc90000270a40 EFLAGS: 00000202
[ 2320.670177][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2320.670179][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2320.670181][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2320.670183][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2320.670185][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2320.670187][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2320.670190][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2320.670194][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2320.670196][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2320.670197][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2320.670199][    C3] PKRU: 55555554
[ 2320.670200][    C3] Call Trace:
[ 2320.670204][    C3]  <IRQ>
[ 2320.670206][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2320.670213][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2320.670218][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2320.670222][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2320.670226][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2320.670230][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2320.670235][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2320.670238][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2320.670242][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2320.670245][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2320.670249][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2320.670251][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2320.670254][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2320.670257][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2320.670262][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2320.670267][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2320.670270][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2320.670274][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2320.670279][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2320.670283][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2320.670289][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2320.670293][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2320.670300][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2320.670305][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2320.670309][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2320.670312][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2320.670315][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2320.670318][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2320.670321][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2320.670327][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2320.670330][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2320.670333][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2320.670337][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2320.670342][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2320.670345][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2320.670348][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2320.670351][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2320.670354][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2320.670359][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2320.670363][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2320.670366][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2320.670371][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2320.670375][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2320.670379][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2320.670384][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2320.670388][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2320.670394][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2320.670397][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2320.670401][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2320.670404][    C3]  </IRQ>
[ 2320.670406][    C3]  <TASK>
[ 2320.670408][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2320.670413][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2320.670417][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2320.670419][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2320.670423][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2320.670425][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2320.670426][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2320.670428][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2320.670430][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2320.670434][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2320.670440][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2320.670445][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2320.670449][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2320.670454][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2320.670457][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2320.670461][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2320.670464][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2320.670469][ C3] xas_alloc (lib/xarray.c:378) 
[ 2320.670474][ C3] xas_create (lib/xarray.c:685) 
[ 2320.670480][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2320.670484][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2320.670488][ C3] __xa_store (lib/xarray.c:1703) 
[ 2320.670492][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2320.670497][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2320.670500][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2320.670503][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2320.670508][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2320.670511][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2320.670515][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2320.670520][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2320.670522][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2320.670526][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2320.670530][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2320.670533][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2320.670538][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2320.670542][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2320.670547][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2320.670551][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2320.670555][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2320.670563][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2320.670567][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2320.670573][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2320.670577][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2320.670581][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2320.670584][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2320.670587][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2320.670591][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2320.670597][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2320.670601][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2320.670606][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2320.670610][    C3] RIP: 0033:0x7f439756d93b
[ 2320.670613][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2320.670615][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2320.670618][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2320.670620][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2320.670622][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2320.670624][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2320.670627][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2336.656139][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2336.656148][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2336.656152][ C0] softirqs last disabled at (0): 0x0 
| [ 2336.656166][    C0] Tainted: [L]=SOFTLOCKUP
[ 2336.656168][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2336.656170][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2336.656179][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2336.656183][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2336.656186][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2336.656189][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2336.656191][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2336.656193][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2336.656195][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2336.656198][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2336.656200][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2336.656205][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2336.656207][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2336.656209][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2336.656211][    C0] PKRU: 55555554
[ 2336.656212][    C0] Call Trace:
[ 2336.656216][    C0]  <TASK>
[ 2336.656220][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2336.656224][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2336.656230][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2336.656234][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2336.656243][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2336.656246][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2336.656250][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2336.656253][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2336.656260][ C0] xa_store (lib/xarray.c:1734) 
[ 2336.656264][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2336.656270][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2336.656275][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2336.656278][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2336.656281][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2336.656288][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2336.656292][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2336.656300][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2336.656304][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2336.656309][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2336.656316][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2336.656321][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2336.656331][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2336.656335][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2336.656342][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2336.656347][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2336.656351][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2336.656356][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2336.656359][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2336.656363][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2336.656370][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2336.656374][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2336.656380][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2336.656386][    C0] RIP: 0033:0x7f439756d93b
[ 2336.656389][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2336.656392][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2336.656395][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2336.656397][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2336.656399][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2336.656401][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2336.656403][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2340.669141][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2340.669150][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2340.669154][ C2] softirqs last disabled at (0): 0x0 
| [ 2340.669168][    C2] Tainted: [L]=SOFTLOCKUP
[ 2340.669170][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2340.669173][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2340.669183][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2340.669186][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2340.669189][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2340.669191][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2340.669194][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2340.669196][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2340.669198][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2340.669200][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2340.669203][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2340.669207][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2340.669209][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2340.669210][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2340.669212][    C2] PKRU: 55555554
[ 2340.669213][    C2] Call Trace:
[ 2340.669219][    C2]  <TASK>
[ 2340.669224][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2340.669228][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2340.669234][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2340.669238][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2340.669246][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2340.669250][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2340.669253][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2340.669256][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2340.669263][ C2] xa_store (lib/xarray.c:1734) 
[ 2340.669268][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2340.669274][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2340.669280][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2340.669283][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2340.669286][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2340.669293][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2340.669296][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2340.669304][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2340.669308][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2340.669314][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2340.669321][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2340.669326][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2340.669336][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2340.669339][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2340.669346][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2340.669351][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2340.669355][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2340.669360][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2340.669363][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2340.669367][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2340.669374][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2340.669378][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2340.669385][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2340.669390][    C2] RIP: 0033:0x7f439756d93b
[ 2340.669396][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2340.669399][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2340.669402][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2340.669404][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2340.669406][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2340.669408][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2340.669410][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2348.669139][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2348.669149][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2348.669153][ C1] softirqs last disabled at (0): 0x0 
| [ 2348.669166][    C1] Tainted: [L]=SOFTLOCKUP
[ 2348.669168][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2348.669171][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2348.669181][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2348.669185][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2348.669188][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2348.669190][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2348.669192][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2348.669195][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2348.669197][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2348.669199][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2348.669201][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2348.669205][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2348.669207][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2348.669209][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2348.669211][    C1] PKRU: 55555554
[ 2348.669212][    C1] Call Trace:
[ 2348.669216][    C1]  <TASK>
[ 2348.669220][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2348.669225][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2348.669230][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2348.669235][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2348.669243][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2348.669247][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2348.669250][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2348.669253][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2348.669260][ C1] xa_store (lib/xarray.c:1734) 
[ 2348.669265][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2348.669271][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2348.669276][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2348.669279][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2348.669282][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2348.669290][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2348.669293][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2348.669301][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2348.669305][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2348.669310][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2348.669317][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2348.669322][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2348.669332][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2348.669336][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2348.669343][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2348.669348][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2348.669351][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2348.669357][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2348.669360][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2348.669364][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2348.669371][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2348.669375][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2348.669381][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2348.669386][    C1] RIP: 0033:0x7f439756d93b
[ 2348.669391][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2348.669393][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2348.669397][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2348.669399][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2348.669401][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2348.669404][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2348.669406][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2348.670132][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2348.670139][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2348.670143][ C3] softirqs last disabled at (0): 0x0 
| [ 2348.670155][    C3] Tainted: [L]=SOFTLOCKUP
[ 2348.670156][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2348.670158][ C3] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2348.670165][ C3] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2348.670168][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2348.670171][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2348.670173][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2348.670175][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2348.670177][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2348.670179][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2348.670181][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2348.670183][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2348.670187][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2348.670190][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2348.670191][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2348.670193][    C3] PKRU: 55555554
[ 2348.670194][    C3] Call Trace:
[ 2348.670198][    C3]  <IRQ>
[ 2348.670200][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2348.670205][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2348.670210][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2348.670213][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2348.670218][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2348.670222][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2348.670226][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2348.670230][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2348.670233][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2348.670236][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2348.670238][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2348.670241][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2348.670244][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2348.670250][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2348.670254][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2348.670257][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2348.670261][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2348.670266][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2348.670271][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2348.670276][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2348.670281][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2348.670287][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2348.670293][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2348.670296][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2348.670299][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2348.670303][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2348.670306][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2348.670309][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2348.670314][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2348.670317][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2348.670320][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2348.670325][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2348.670329][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2348.670333][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2348.670335][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2348.670339][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2348.670342][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2348.670347][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2348.670351][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2348.670354][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2348.670359][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2348.670363][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2348.670367][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2348.670371][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2348.670376][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2348.670382][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2348.670386][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2348.670389][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2348.670393][    C3]  </IRQ>
[ 2348.670394][    C3]  <TASK>
[ 2348.670396][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2348.670401][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2348.670404][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2348.670407][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2348.670410][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2348.670413][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2348.670415][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2348.670417][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2348.670419][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2348.670423][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2348.670429][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2348.670434][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2348.670438][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2348.670442][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2348.670445][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2348.670450][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2348.670452][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2348.670458][ C3] xas_alloc (lib/xarray.c:378) 
[ 2348.670463][ C3] xas_create (lib/xarray.c:685) 
[ 2348.670469][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2348.670473][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2348.670477][ C3] __xa_store (lib/xarray.c:1703) 
[ 2348.670482][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2348.670486][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2348.670489][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2348.670492][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2348.670497][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2348.670501][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2348.670504][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2348.670509][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2348.670512][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2348.670514][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2348.670518][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2348.670522][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2348.670527][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2348.670531][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2348.670535][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2348.670539][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2348.670544][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2348.670552][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2348.670556][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2348.670561][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2348.670565][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2348.670569][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2348.670572][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2348.670575][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2348.670578][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2348.670585][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2348.670589][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2348.670594][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2348.670597][    C3] RIP: 0033:0x7f439756d93b
[ 2348.670601][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2348.670604][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2348.670607][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2348.670609][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2348.670611][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2348.670613][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2348.670615][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2364.656139][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2364.656148][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2364.656152][ C0] softirqs last disabled at (0): 0x0 
| [ 2364.656165][    C0] Tainted: [L]=SOFTLOCKUP
[ 2364.656167][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2364.656170][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:86 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 2364.656176][ C0] Code: d0 74 11 80 38 00 74 ef 4d 8d 1c 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea <eb> 09 48 83 c0 01 48 39 d0 74 a5 80 38 00 74 f2 e9 74 ff ff ff b8
All code
========
   0:	d0 74 11 80          	shlb   $1,-0x80(%rcx,%rdx,1)
   4:	38 00                	cmp    %al,(%rax)
   6:	74 ef                	je     0xfffffffffffffff7
   8:	4d 8d 1c 2c          	lea    (%r12,%rbp,1),%r11
   c:	48 89 c2             	mov    %rax,%rdx
   f:	48 85 c0             	test   %rax,%rax
  12:	75 b0                	jne    0xffffffffffffffc4
  14:	48 89 da             	mov    %rbx,%rdx
  17:	4c 89 d8             	mov    %r11,%rax
  1a:	4c 29 da             	sub    %r11,%rdx
  1d:	e9 49 ff ff ff       	jmp    0xffffffffffffff6b
  22:	48 85 d2             	test   %rdx,%rdx
  25:	74 b3                	je     0xffffffffffffffda
  27:	48 01 ea             	add    %rbp,%rdx
  2a:*	eb 09                	jmp    0x35		<-- trapping instruction
  2c:	48 83 c0 01          	add    $0x1,%rax
  30:	48 39 d0             	cmp    %rdx,%rax
  33:	74 a5                	je     0xffffffffffffffda
  35:	80 38 00             	cmpb   $0x0,(%rax)
  38:	74 f2                	je     0x2c
  3a:	e9 74 ff ff ff       	jmp    0xffffffffffffffb3
  3f:	b8                   	.byte 0xb8

Code starting with the faulting instruction
===========================================
   0:	eb 09                	jmp    0xb
   2:	48 83 c0 01          	add    $0x1,%rax
   6:	48 39 d0             	cmp    %rdx,%rax
   9:	74 a5                	je     0xffffffffffffffb0
   b:	80 38 00             	cmpb   $0x0,(%rax)
   e:	74 f2                	je     0x2
  10:	e9 74 ff ff ff       	jmp    0xffffffffffffff89
  15:	b8                   	.byte 0xb8
[ 2364.656179][    C0] RSP: 0018:ffffc900034c79f8 EFLAGS: 00000286
[ 2364.656183][    C0] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 2364.656185][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2364.656187][    C0] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2364.656189][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2364.656191][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2364.656194][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2364.656197][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2364.656201][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2364.656203][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2364.656205][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2364.656207][    C0] PKRU: 55555554
[ 2364.656209][    C0] Call Trace:
[ 2364.656213][    C0]  <TASK>
[ 2364.656216][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2364.656226][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2364.656229][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2364.656235][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2364.656239][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2364.656247][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2364.656250][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2364.656253][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2364.656256][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2364.656263][ C0] xa_store (lib/xarray.c:1734) 
[ 2364.656268][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2364.656273][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2364.656279][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2364.656282][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2364.656285][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2364.656291][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2364.656295][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2364.656303][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2364.656306][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2364.656311][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2364.656318][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2364.656323][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2364.656332][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2364.656336][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2364.656342][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2364.656347][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2364.656351][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2364.656355][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2364.656359][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2364.656362][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2364.656369][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2364.656373][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2364.656379][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2364.656384][    C0] RIP: 0033:0x7f439756d93b
[ 2364.656389][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2364.656392][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2364.656395][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2364.656397][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2364.656399][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2364.656401][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2364.656403][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2368.669140][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2368.669149][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2368.669152][ C2] softirqs last disabled at (0): 0x0 
| [ 2368.669166][    C2] Tainted: [L]=SOFTLOCKUP
[ 2368.669168][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2368.669170][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2368.669180][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2368.669183][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2368.669187][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2368.669190][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2368.669192][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2368.669194][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2368.669196][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2368.669198][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2368.669200][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2368.669205][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2368.669207][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2368.669209][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2368.669210][    C2] PKRU: 55555554
[ 2368.669212][    C2] Call Trace:
[ 2368.669217][    C2]  <TASK>
[ 2368.669221][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2368.669225][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2368.669231][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2368.669236][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2368.669243][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2368.669246][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2368.669249][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2368.669252][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2368.669259][ C2] xa_store (lib/xarray.c:1734) 
[ 2368.669264][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2368.669270][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2368.669275][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2368.669278][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2368.669281][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2368.669288][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2368.669291][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2368.669299][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2368.669303][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2368.669308][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2368.669316][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2368.669321][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2368.669330][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2368.669335][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2368.669341][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2368.669346][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2368.669350][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2368.669355][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2368.669359][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2368.669362][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2368.669369][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2368.669373][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2368.669379][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2368.669385][    C2] RIP: 0033:0x7f439756d93b
[ 2368.669391][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2368.669394][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2368.669397][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2368.669399][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2368.669401][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2368.669403][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2368.669405][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2374.313352][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 2374.313637][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 2374.313882][    C1] NMI backtrace for cpu 1
| [ 2374.313903][    C1] Tainted: [L]=SOFTLOCKUP
[ 2374.313904][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2374.313908][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2374.313920][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2374.313924][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2374.313928][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2374.313930][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2374.313932][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2374.313935][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2374.313937][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2374.313939][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2374.313941][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2374.313945][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2374.313947][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2374.313948][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2374.313950][    C1] PKRU: 55555554
[ 2374.313951][    C1] Call Trace:
[ 2374.313953][    C1]  <TASK>
[ 2374.313955][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2374.313959][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2374.313965][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2374.313969][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2374.313977][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2374.313980][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2374.313983][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2374.313985][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2374.313993][ C1] xa_store (lib/xarray.c:1734) 
[ 2374.313997][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2374.314002][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2374.314007][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2374.314010][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2374.314013][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2374.314020][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2374.314023][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2374.314030][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2374.314034][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2374.314039][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2374.314045][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2374.314050][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2374.314059][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2374.314063][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2374.314070][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2374.314077][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2374.314081][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2374.314086][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2374.314089][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2374.314093][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2374.314100][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2374.314104][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2374.314109][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2374.314114][    C1] RIP: 0033:0x7f439756d93b
[ 2374.314120][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2374.314123][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2374.314126][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2374.314128][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2374.314130][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2374.314131][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2374.314133][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2374.314131][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 2374.314133][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2374.314139][    C1]  </TASK>
| [ 2374.314887][    C3] Tainted: [L]=SOFTLOCKUP
[ 2374.314889][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2374.314891][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2374.314897][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2374.314901][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2374.314905][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2374.314907][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2374.314910][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2374.314912][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2374.314914][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2374.314916][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2374.314918][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2374.314922][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2374.314924][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2374.314926][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2374.314928][    C3] PKRU: 55555554
[ 2374.314929][    C3] Call Trace:
[ 2374.314931][    C3]  <IRQ>
[ 2374.314932][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2374.314937][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2374.314942][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2374.314945][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2374.314948][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2374.314953][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2374.314956][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2374.314960][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2374.314963][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2374.314967][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2374.314969][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2374.314972][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2374.314975][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2374.314980][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2374.314984][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2374.314987][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2374.314991][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2374.314996][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2374.315000][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2374.315005][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2374.315009][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2374.315015][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2374.315020][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2374.315023][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2374.315026][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2374.315029][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2374.315033][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2374.315035][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2374.315042][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2374.315045][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2374.315048][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2374.315053][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2374.315057][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2374.315061][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2374.315064][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2374.315068][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2374.315071][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2374.315076][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2374.315080][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2374.315083][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2374.315088][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2374.315092][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2374.315095][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2374.315100][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2374.315105][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2374.315111][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2374.315114][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2374.315118][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2374.315121][    C3]  </IRQ>
[ 2374.315123][    C3]  <TASK>
[ 2374.315124][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2374.315128][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2374.315132][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2374.315135][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2374.315137][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2374.315139][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2374.315141][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2374.315142][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2374.315144][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2374.315149][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2374.315155][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2374.315160][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2374.315164][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2374.315169][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2374.315171][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2374.315175][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2374.315178][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2374.315183][ C3] xas_alloc (lib/xarray.c:378) 
[ 2374.315187][ C3] xas_create (lib/xarray.c:685) 
[ 2374.315193][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2374.315197][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2374.315201][ C3] __xa_store (lib/xarray.c:1703) 
[ 2374.315205][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2374.315209][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2374.315212][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2374.315215][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2374.315220][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2374.315224][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2374.315227][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2374.315231][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2374.315234][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2374.315237][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2374.315241][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2374.315244][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2374.315249][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2374.315253][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2374.315258][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2374.315261][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2374.315266][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2374.315273][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2374.315277][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2374.315282][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2374.315287][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2374.315291][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2374.315294][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2374.315297][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2374.315300][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2374.315307][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2374.315310][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2374.315315][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2374.315318][    C3] RIP: 0033:0x7f439756d93b
[ 2374.315322][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2374.315324][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2374.315327][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2374.315329][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2374.315330][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2374.315332][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2374.315333][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2392.656142][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2392.656152][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2392.656156][ C0] softirqs last disabled at (0): 0x0 
| [ 2392.656170][    C0] Tainted: [L]=SOFTLOCKUP
[ 2392.656172][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2392.656175][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2392.656186][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2392.656189][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2392.656193][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2392.656195][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2392.656197][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2392.656199][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2392.656202][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2392.656204][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2392.656206][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2392.656210][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2392.656212][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2392.656214][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2392.656215][    C0] PKRU: 55555554
[ 2392.656217][    C0] Call Trace:
[ 2392.656223][    C0]  <TASK>
[ 2392.656227][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2392.656231][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2392.656237][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2392.656242][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2392.656250][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2392.656254][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2392.656257][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2392.656260][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2392.656267][ C0] xa_store (lib/xarray.c:1734) 
[ 2392.656272][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2392.656279][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2392.656284][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2392.656287][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2392.656290][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2392.656297][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2392.656301][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2392.656309][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2392.656313][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2392.656318][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2392.656325][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2392.656330][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2392.656340][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2392.656344][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2392.656351][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2392.656356][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2392.656360][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2392.656365][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2392.656369][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2392.656372][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2392.656380][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2392.656384][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2392.656390][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2392.656401][    C0] RIP: 0033:0x7f439756d93b
[ 2392.656406][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2392.656409][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2392.656412][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2392.656414][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2392.656417][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2392.656419][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2392.656421][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2396.669148][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2396.669157][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2396.669161][ C2] softirqs last disabled at (0): 0x0 
| [ 2396.669174][    C2] Tainted: [L]=SOFTLOCKUP
[ 2396.669176][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2396.669179][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2396.669188][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2396.669192][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2396.669195][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2396.669198][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2396.669200][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2396.669202][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2396.669204][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2396.669206][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2396.669209][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2396.669212][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2396.669214][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2396.669216][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2396.669218][    C2] PKRU: 55555554
[ 2396.669219][    C2] Call Trace:
[ 2396.669223][    C2]  <TASK>
[ 2396.669227][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2396.669231][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2396.669237][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2396.669241][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2396.669248][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2396.669252][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2396.669255][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2396.669258][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2396.669265][ C2] xa_store (lib/xarray.c:1734) 
[ 2396.669270][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2396.669276][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2396.669282][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2396.669284][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2396.669287][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2396.669295][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2396.669298][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2396.669306][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2396.669310][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2396.669315][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2396.669322][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2396.669327][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2396.669337][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2396.669341][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2396.669347][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2396.669352][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2396.669356][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2396.669361][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2396.669364][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2396.669368][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2396.669376][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2396.669380][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2396.669386][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2396.669391][    C2] RIP: 0033:0x7f439756d93b
[ 2396.669396][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2396.669398][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2396.669402][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2396.669404][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2396.669406][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2396.669407][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2396.669410][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2400.669140][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2400.669150][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2400.669154][ C1] softirqs last disabled at (0): 0x0 
| [ 2400.669168][    C1] Tainted: [L]=SOFTLOCKUP
[ 2400.669170][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2400.669173][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2400.669184][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2400.669187][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2400.669191][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2400.669193][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2400.669195][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2400.669197][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2400.669199][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2400.669202][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2400.669204][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2400.669208][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2400.669210][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2400.669212][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2400.669214][    C1] PKRU: 55555554
[ 2400.669215][    C1] Call Trace:
[ 2400.669220][    C1]  <TASK>
[ 2400.669224][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2400.669229][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2400.669234][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2400.669238][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2400.669247][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2400.669251][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2400.669253][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2400.669256][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2400.669264][ C1] xa_store (lib/xarray.c:1734) 
[ 2400.669269][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2400.669275][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2400.669280][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2400.669283][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2400.669285][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2400.669292][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2400.669296][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2400.669304][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2400.669307][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2400.669312][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2400.669320][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2400.669325][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2400.669334][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2400.669338][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2400.669345][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2400.669350][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2400.669354][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2400.669359][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2400.669362][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2400.669366][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2400.669373][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2400.669377][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2400.669384][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2400.669389][    C1] RIP: 0033:0x7f439756d93b
[ 2400.669394][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2400.669397][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2400.669400][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2400.669402][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2400.669404][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2400.669406][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2400.669408][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2400.670128][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2400.670134][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2400.670138][ C3] softirqs last disabled at (0): 0x0 
| [ 2400.670149][    C3] Tainted: [L]=SOFTLOCKUP
[ 2400.670150][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2400.670152][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2400.670158][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2400.670161][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2400.670164][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2400.670167][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2400.670169][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2400.670171][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2400.670173][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2400.670175][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2400.670178][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2400.670182][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2400.670184][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2400.670186][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2400.670187][    C3] PKRU: 55555554
[ 2400.670188][    C3] Call Trace:
[ 2400.670191][    C3]  <IRQ>
[ 2400.670193][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2400.670199][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2400.670205][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2400.670208][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2400.670213][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2400.670219][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2400.670222][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2400.670226][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2400.670230][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2400.670234][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2400.670236][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2400.670239][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2400.670242][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2400.670248][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2400.670252][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2400.670255][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2400.670258][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2400.670264][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2400.670268][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2400.670274][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2400.670278][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2400.670284][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2400.670288][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2400.670291][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2400.670294][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2400.670298][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2400.670302][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2400.670304][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2400.670311][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2400.670315][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2400.670318][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2400.670322][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2400.670327][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2400.670330][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2400.670333][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2400.670338][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2400.670342][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2400.670346][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2400.670351][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2400.670354][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2400.670359][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2400.670363][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2400.670367][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2400.670372][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2400.670376][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2400.670383][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2400.670387][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2400.670390][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2400.670394][    C3]  </IRQ>
[ 2400.670396][    C3]  <TASK>
[ 2400.670397][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2400.670402][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2400.670406][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2400.670409][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2400.670412][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2400.670414][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2400.670416][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2400.670418][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2400.670420][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2400.670424][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2400.670431][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2400.670437][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2400.670440][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2400.670445][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2400.670448][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2400.670452][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2400.670454][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2400.670460][ C3] xas_alloc (lib/xarray.c:378) 
[ 2400.670465][ C3] xas_create (lib/xarray.c:685) 
[ 2400.670471][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2400.670476][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2400.670479][ C3] __xa_store (lib/xarray.c:1703) 
[ 2400.670483][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2400.670488][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2400.670491][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2400.670494][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2400.670499][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2400.670503][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2400.670506][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2400.670511][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2400.670514][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2400.670517][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2400.670522][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2400.670525][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2400.670530][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2400.670534][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2400.670538][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2400.670542][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2400.670547][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2400.670554][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2400.670558][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2400.670562][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2400.670567][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2400.670570][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2400.670574][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2400.670576][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2400.670580][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2400.670585][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2400.670589][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2400.670594][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2400.670597][    C3] RIP: 0033:0x7f439756d93b
[ 2400.670602][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2400.670604][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2400.670608][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2400.670610][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2400.670612][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2400.670614][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2400.670615][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2420.656140][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2420.656151][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2420.656155][ C0] softirqs last disabled at (0): 0x0 
| [ 2420.656169][    C0] Tainted: [L]=SOFTLOCKUP
[ 2420.656171][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2420.656173][ C0] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 2420.656181][ C0] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 2420.656184][    C0] RSP: 0018:ffffc900034c7a10 EFLAGS: 00000202
[ 2420.656188][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2420.656190][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2420.656192][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2420.656194][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2420.656202][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2420.656204][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2420.656207][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2420.656211][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2420.656213][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2420.656215][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2420.656217][    C0] PKRU: 55555554
[ 2420.656218][    C0] Call Trace:
[ 2420.656223][    C0]  <TASK>
[ 2420.656225][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2420.656236][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2420.656240][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2420.656245][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2420.656250][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2420.656257][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2420.656261][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2420.656264][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2420.656268][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2420.656275][ C0] xa_store (lib/xarray.c:1734) 
[ 2420.656279][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2420.656285][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2420.656291][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2420.656294][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2420.656297][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2420.656304][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2420.656307][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2420.656316][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2420.656319][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2420.656324][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2420.656332][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2420.656337][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2420.656347][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2420.656351][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2420.656358][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2420.656363][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2420.656366][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2420.656372][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2420.656375][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2420.656379][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2420.656387][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2420.656391][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2420.656397][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2420.656402][    C0] RIP: 0033:0x7f439756d93b
[ 2420.656407][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2420.656410][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2420.656413][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2420.656415][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2420.656417][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2420.656419][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2420.656421][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2424.669138][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2424.669147][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2424.669151][ C2] softirqs last disabled at (0): 0x0 
| [ 2424.669165][    C2] Tainted: [L]=SOFTLOCKUP
[ 2424.669166][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2424.669169][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2424.669178][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2424.669181][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2424.669185][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2424.669187][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2424.669189][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2424.669191][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2424.669193][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2424.669195][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2424.669198][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2424.669202][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2424.669204][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2424.669205][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2424.669207][    C2] PKRU: 55555554
[ 2424.669209][    C2] Call Trace:
[ 2424.669214][    C2]  <TASK>
[ 2424.669219][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2424.669223][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2424.669229][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2424.669233][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2424.669241][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2424.669245][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2424.669248][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2424.669251][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2424.669258][ C2] xa_store (lib/xarray.c:1734) 
[ 2424.669263][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2424.669269][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2424.669275][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2424.669278][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2424.669281][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2424.669288][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2424.669291][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2424.669299][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2424.669304][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2424.669309][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2424.669316][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2424.669321][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2424.669331][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2424.669335][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2424.669342][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2424.669347][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2424.669351][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2424.669356][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2424.669359][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2424.669363][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2424.669370][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2424.669374][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2424.669380][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2424.669386][    C2] RIP: 0033:0x7f439756d93b
[ 2424.669391][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2424.669394][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2424.669397][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2424.669399][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2424.669401][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2424.669403][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2424.669405][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2428.669140][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2428.669150][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2428.669154][ C1] softirqs last disabled at (0): 0x0 
| [ 2428.669168][    C1] Tainted: [L]=SOFTLOCKUP
[ 2428.669169][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2428.669172][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 2428.669179][ C1] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 2428.669182][    C1] RSP: 0018:ffffc900034b7a00 EFLAGS: 00000282
[ 2428.669186][    C1] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2428.669188][    C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2428.669190][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2428.669193][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2428.669195][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2428.669197][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2428.669200][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2428.669204][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2428.669206][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2428.669208][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2428.669210][    C1] PKRU: 55555554
[ 2428.669211][    C1] Call Trace:
[ 2428.669215][    C1]  <TASK>
[ 2428.669218][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2428.669228][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2428.669232][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2428.669237][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2428.669242][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2428.669249][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2428.669252][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2428.669255][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2428.669258][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2428.669266][ C1] xa_store (lib/xarray.c:1734) 
[ 2428.669270][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2428.669276][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2428.669281][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2428.669284][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2428.669287][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2428.669295][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2428.669298][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2428.669306][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2428.669310][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2428.669315][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2428.669323][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2428.669328][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2428.669337][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2428.669341][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2428.669347][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2428.669352][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2428.669355][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2428.669361][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2428.669364][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2428.669368][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2428.669375][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2428.669379][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2428.669384][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2428.669389][    C1] RIP: 0033:0x7f439756d93b
[ 2428.669394][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2428.669397][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2428.669400][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2428.669402][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2428.669404][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2428.669406][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2428.669408][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2428.670126][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2428.670132][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2428.670135][ C3] softirqs last disabled at (0): 0x0 
| [ 2428.670145][    C3] Tainted: [L]=SOFTLOCKUP
[ 2428.670147][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2428.670149][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2428.670155][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2428.670158][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2428.670161][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2428.670163][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2428.670165][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2428.670167][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2428.670169][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2428.670171][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2428.670173][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2428.670177][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2428.670179][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2428.670181][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2428.670183][    C3] PKRU: 55555554
[ 2428.670184][    C3] Call Trace:
[ 2428.670186][    C3]  <IRQ>
[ 2428.670188][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2428.670194][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2428.670200][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2428.670203][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2428.670209][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2428.670214][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2428.670218][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2428.670222][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2428.670225][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2428.670228][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2428.670231][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2428.670234][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2428.670237][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2428.670242][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2428.670246][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2428.670249][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2428.670252][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2428.670257][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2428.670262][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2428.670268][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2428.670272][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2428.670278][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2428.670282][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2428.670286][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2428.670289][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2428.670293][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2428.670296][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2428.670299][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2428.670306][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2428.670309][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2428.670312][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2428.670317][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2428.670321][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2428.670324][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2428.670327][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2428.670331][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2428.670334][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2428.670338][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2428.670343][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2428.670346][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2428.670351][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2428.670356][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2428.670359][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2428.670364][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2428.670368][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2428.670374][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2428.670377][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2428.670380][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2428.670384][    C3]  </IRQ>
[ 2428.670385][    C3]  <TASK>
[ 2428.670387][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2428.670391][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2428.670395][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2428.670397][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2428.670400][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2428.670401][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2428.670403][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2428.670405][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2428.670407][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2428.670411][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2428.670416][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2428.670422][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2428.670426][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2428.670431][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2428.670434][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2428.670438][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2428.670441][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2428.670446][ C3] xas_alloc (lib/xarray.c:378) 
[ 2428.670451][ C3] xas_create (lib/xarray.c:685) 
[ 2428.670457][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2428.670461][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2428.670465][ C3] __xa_store (lib/xarray.c:1703) 
[ 2428.670469][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2428.670474][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2428.670476][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2428.670480][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2428.670484][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2428.670488][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2428.670491][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2428.670496][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2428.670499][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2428.670502][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2428.670506][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2428.670509][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2428.670514][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2428.670517][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2428.670522][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2428.670526][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2428.670530][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2428.670537][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2428.670541][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2428.670545][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2428.670549][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2428.670553][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2428.670556][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2428.670559][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2428.670562][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2428.670568][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2428.670571][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2428.670576][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2428.670579][    C3] RIP: 0033:0x7f439756d93b
[ 2428.670583][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2428.670586][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2428.670589][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2428.670591][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2428.670593][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2428.670595][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2428.670597][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2448.656141][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2448.656151][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2448.656155][ C0] softirqs last disabled at (0): 0x0 
| [ 2448.656168][    C0] Tainted: [L]=SOFTLOCKUP
[ 2448.656170][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2448.656172][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2448.656182][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2448.656186][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2448.656190][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2448.656192][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2448.656194][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2448.656196][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2448.656199][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2448.656201][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2448.656204][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2448.656208][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2448.656210][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2448.656212][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2448.656214][    C0] PKRU: 55555554
[ 2448.656215][    C0] Call Trace:
[ 2448.656220][    C0]  <TASK>
[ 2448.656224][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2448.656228][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2448.656234][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2448.656239][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2448.656246][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2448.656250][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2448.656253][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2448.656256][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2448.656263][ C0] xa_store (lib/xarray.c:1734) 
[ 2448.656267][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2448.656273][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2448.656279][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2448.656282][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2448.656285][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2448.656292][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2448.656295][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2448.656304][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2448.656308][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2448.656313][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2448.656321][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2448.656325][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2448.656335][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2448.656339][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2448.656346][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2448.656351][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2448.656355][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2448.656360][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2448.656363][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2448.656367][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2448.656375][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2448.656379][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2448.656385][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2448.656391][    C0] RIP: 0033:0x7f439756d93b
[ 2448.656394][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2448.656397][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2448.656401][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2448.656403][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2448.656405][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2448.656407][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2448.656409][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2452.327700][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 2452.328147][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 2452.328398][    C1] NMI backtrace for cpu 1
| [ 2452.328413][    C1] Tainted: [L]=SOFTLOCKUP
[ 2452.328415][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2452.328417][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2452.328426][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2452.328430][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2452.328434][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2452.328436][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2452.328438][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2452.328440][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2452.328442][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2452.328444][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2452.328447][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2452.328451][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2452.328452][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2452.328454][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2452.328456][    C1] PKRU: 55555554
[ 2452.328457][    C1] Call Trace:
[ 2452.328458][    C1]  <TASK>
[ 2452.328461][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2452.328464][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2452.328469][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2452.328473][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2452.328480][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2452.328483][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2452.328485][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2452.328488][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2452.328495][ C1] xa_store (lib/xarray.c:1734) 
[ 2452.328499][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2452.328504][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2452.328509][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2452.328512][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2452.328515][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2452.328520][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2452.328523][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2452.328530][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2452.328534][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2452.328540][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2452.328547][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2452.328551][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2452.328559][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2452.328563][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2452.328570][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2452.328576][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2452.328580][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2452.328585][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2452.328589][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2452.328593][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2452.328600][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2452.328604][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2452.328609][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2452.328613][    C1] RIP: 0033:0x7f439756d93b
[ 2452.328618][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2452.328620][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2452.328624][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2452.328625][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2452.328627][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2452.328629][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2452.328630][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2452.328629][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 2452.328630][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2452.328636][    C1]  </TASK>
| [ 2452.329400][    C3] Tainted: [L]=SOFTLOCKUP
[ 2452.329402][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2452.329404][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2452.329408][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2452.329411][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2452.329414][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2452.329416][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2452.329418][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2452.329420][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2452.329422][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2452.329424][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2452.329426][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2452.329430][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2452.329432][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2452.329433][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2452.329435][    C3] PKRU: 55555554
[ 2452.329436][    C3] Call Trace:
[ 2452.329438][    C3]  <IRQ>
[ 2452.329439][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2452.329446][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2452.329451][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2452.329454][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2452.329457][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2452.329463][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2452.329466][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2452.329470][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2452.329473][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2452.329476][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2452.329479][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2452.329481][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2452.329484][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2452.329489][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2452.329492][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2452.329495][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2452.329498][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2452.329503][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2452.329507][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2452.329512][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2452.329515][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2452.329520][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2452.329525][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2452.329528][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2452.329531][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2452.329534][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2452.329538][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2452.329540][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2452.329547][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2452.329550][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2452.329553][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2452.329557][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2452.329561][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2452.329564][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2452.329567][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2452.329571][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2452.329575][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2452.329579][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2452.329583][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2452.329586][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2452.329591][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2452.329596][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2452.329599][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2452.329604][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2452.329608][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2452.329613][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2452.329617][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2452.329620][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2452.329624][    C3]  </IRQ>
[ 2452.329625][    C3]  <TASK>
[ 2452.329627][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2452.329631][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2452.329634][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2452.329637][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2452.329639][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2452.329641][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2452.329642][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2452.329644][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2452.329646][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2452.329650][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2452.329655][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2452.329660][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2452.329664][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2452.329669][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2452.329672][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2452.329675][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2452.329678][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2452.329683][ C3] xas_alloc (lib/xarray.c:378) 
[ 2452.329688][ C3] xas_create (lib/xarray.c:685) 
[ 2452.329693][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2452.329698][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2452.329701][ C3] __xa_store (lib/xarray.c:1703) 
[ 2452.329705][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2452.329710][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2452.329713][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2452.329716][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2452.329721][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2452.329724][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2452.329727][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2452.329732][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2452.329735][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2452.329738][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2452.329742][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2452.329745][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2452.329750][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2452.329754][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2452.329759][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2452.329763][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2452.329767][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2452.329773][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2452.329777][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2452.329781][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2452.329786][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2452.329789][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2452.329793][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2452.329795][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2452.329799][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2452.329805][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2452.329808][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2452.329813][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2452.329816][    C3] RIP: 0033:0x7f439756d93b
[ 2452.329820][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2452.329822][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2452.329825][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2452.329827][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2452.329828][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2452.329830][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2452.329832][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2452.669141][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2452.669151][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2452.669155][ C2] softirqs last disabled at (0): 0x0 
| [ 2452.669168][    C2] Tainted: [L]=SOFTLOCKUP
[ 2452.669170][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2452.669172][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2452.669182][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2452.669186][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2452.669189][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2452.669191][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2452.669194][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2452.669196][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2452.669198][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2452.669201][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2452.669204][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2452.669208][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2452.669210][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2452.669211][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2452.669213][    C2] PKRU: 55555554
[ 2452.669214][    C2] Call Trace:
[ 2452.669219][    C2]  <TASK>
[ 2452.669224][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2452.669228][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2452.669234][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2452.669238][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2452.669246][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2452.669250][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2452.669253][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2452.669256][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2452.669263][ C2] xa_store (lib/xarray.c:1734) 
[ 2452.669268][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2452.669274][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2452.669279][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2452.669282][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2452.669285][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2452.669292][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2452.669296][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2452.669304][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2452.669308][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2452.669313][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2452.669321][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2452.669326][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2452.669336][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2452.669340][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2452.669347][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2452.669352][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2452.669355][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2452.669360][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2452.669364][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2452.669368][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2452.669375][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2452.669379][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2452.669385][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2452.669391][    C2] RIP: 0033:0x7f439756d93b
[ 2452.669397][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2452.669400][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2452.669403][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2452.669405][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2452.669407][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2452.669409][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2452.669411][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2476.656141][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2476.656150][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2476.656154][ C0] softirqs last disabled at (0): 0x0 
| [ 2476.656167][    C0] Tainted: [L]=SOFTLOCKUP
[ 2476.656169][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2476.656172][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2476.656182][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2476.656185][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2476.656188][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2476.656191][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2476.656193][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2476.656195][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2476.656197][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2476.656199][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2476.656202][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2476.656206][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2476.656208][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2476.656210][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2476.656212][    C0] PKRU: 55555554
[ 2476.656213][    C0] Call Trace:
[ 2476.656218][    C0]  <TASK>
[ 2476.656222][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2476.656226][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2476.656232][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2476.656236][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2476.656244][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2476.656248][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2476.656251][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2476.656254][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2476.656261][ C0] xa_store (lib/xarray.c:1734) 
[ 2476.656265][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2476.656271][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2476.656276][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2476.656279][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2476.656282][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2476.656289][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2476.656292][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2476.656300][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2476.656304][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2476.656309][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2476.656317][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2476.656322][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2476.656331][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2476.656335][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2476.656342][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2476.656347][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2476.656351][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2476.656356][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2476.656359][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2476.656363][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2476.656370][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2476.656375][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2476.656381][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2476.656386][    C0] RIP: 0033:0x7f439756d93b
[ 2476.656390][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2476.656393][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2476.656397][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2476.656399][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2476.656401][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2476.656403][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2476.656405][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2476.669125][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2476.669131][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2476.669134][ C1] softirqs last disabled at (0): 0x0 
| [ 2476.669145][    C1] Tainted: [L]=SOFTLOCKUP
[ 2476.669146][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2476.669149][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2476.669154][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2476.669157][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2476.669160][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2476.669162][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2476.669164][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2476.669166][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2476.669168][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2476.669170][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2476.669172][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2476.669176][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2476.669178][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2476.669179][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2476.669181][    C1] PKRU: 55555554
[ 2476.669182][    C1] Call Trace:
[ 2476.669185][    C1]  <TASK>
[ 2476.669188][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2476.669192][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2476.669196][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2476.669200][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2476.669205][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2476.669208][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2476.669211][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2476.669214][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2476.669220][ C1] xa_store (lib/xarray.c:1734) 
[ 2476.669224][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2476.669228][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2476.669234][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2476.669237][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2476.669240][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2476.669244][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2476.669248][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2476.669254][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2476.669257][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2476.669262][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2476.669266][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2476.669271][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2476.669278][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2476.669281][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2476.669286][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2476.669291][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2476.669295][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2476.669299][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2476.669302][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2476.669305][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2476.669311][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2476.669315][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2476.669319][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2476.669324][    C1] RIP: 0033:0x7f439756d93b
[ 2476.669328][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2476.669330][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2476.669334][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2476.669336][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2476.669337][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2476.669339][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2476.669341][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2476.670123][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2476.670128][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2476.670132][ C3] softirqs last disabled at (0): 0x0 
| [ 2476.670141][    C3] Tainted: [L]=SOFTLOCKUP
[ 2476.670143][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2476.670145][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2476.670149][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2476.670152][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2476.670155][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2476.670157][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2476.670160][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2476.670161][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2476.670163][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2476.670165][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2476.670168][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2476.670172][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2476.670174][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2476.670175][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2476.670177][    C3] PKRU: 55555554
[ 2476.670178][    C3] Call Trace:
[ 2476.670180][    C3]  <IRQ>
[ 2476.670182][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2476.670188][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2476.670193][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2476.670196][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2476.670201][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2476.670206][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2476.670210][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2476.670214][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2476.670217][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2476.670220][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2476.670223][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2476.670226][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2476.670229][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2476.670233][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2476.670237][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2476.670240][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2476.670243][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2476.670248][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2476.670252][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2476.670258][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2476.670261][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2476.670266][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2476.670271][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2476.670275][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2476.670278][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2476.670281][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2476.670285][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2476.670288][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2476.670294][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2476.670297][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2476.670300][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2476.670305][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2476.670309][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2476.670313][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2476.670315][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2476.670319][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2476.670323][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2476.670327][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2476.670332][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2476.670335][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2476.670341][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2476.670345][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2476.670349][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2476.670354][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2476.670358][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2476.670364][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2476.670368][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2476.670371][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2476.670375][    C3]  </IRQ>
[ 2476.670376][    C3]  <TASK>
[ 2476.670378][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2476.670382][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2476.670385][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2476.670388][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2476.670391][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2476.670393][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2476.670395][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2476.670397][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2476.670399][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2476.670403][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2476.670409][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2476.670415][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2476.670418][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2476.670423][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2476.670426][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2476.670430][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2476.670433][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2476.670438][ C3] xas_alloc (lib/xarray.c:378) 
[ 2476.670443][ C3] xas_create (lib/xarray.c:685) 
[ 2476.670448][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2476.670453][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2476.670457][ C3] __xa_store (lib/xarray.c:1703) 
[ 2476.670461][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2476.670465][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2476.670468][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2476.670471][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2476.670476][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2476.670480][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2476.670483][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2476.670488][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2476.670491][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2476.670494][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2476.670498][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2476.670502][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2476.670507][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2476.670511][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2476.670515][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2476.670519][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2476.670524][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2476.670530][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2476.670534][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2476.670538][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2476.670542][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2476.670545][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2476.670549][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2476.670551][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2476.670555][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2476.670560][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2476.670564][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2476.670569][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2476.670572][    C3] RIP: 0033:0x7f439756d93b
[ 2476.670575][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2476.670578][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2476.670581][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2476.670583][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2476.670585][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2476.670587][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2476.670589][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2480.669139][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2480.669149][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2480.669153][ C2] softirqs last disabled at (0): 0x0 
| [ 2480.669167][    C2] Tainted: [L]=SOFTLOCKUP
[ 2480.669168][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2480.669171][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2480.669181][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2480.669185][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2480.669189][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2480.669191][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2480.669193][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2480.669195][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2480.669197][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2480.669199][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2480.669202][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2480.669206][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2480.669208][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2480.669210][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2480.669212][    C2] PKRU: 55555554
[ 2480.669213][    C2] Call Trace:
[ 2480.669219][    C2]  <TASK>
[ 2480.669223][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2480.669227][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2480.669233][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2480.669237][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2480.669245][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2480.669249][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2480.669252][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2480.669254][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2480.669262][ C2] xa_store (lib/xarray.c:1734) 
[ 2480.669266][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2480.669272][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2480.669278][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2480.669281][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2480.669284][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2480.669291][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2480.669294][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2480.669303][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2480.669307][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2480.669312][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2480.669319][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2480.669324][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2480.669333][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2480.669337][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2480.669344][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2480.669349][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2480.669352][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2480.669357][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2480.669361][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2480.669365][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2480.669373][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2480.669377][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2480.669382][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2480.669387][    C2] RIP: 0033:0x7f439756d93b
[ 2480.669393][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2480.669396][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2480.669399][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2480.669401][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2480.669403][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2480.669405][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2480.669407][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2504.656140][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2504.656149][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2504.656153][ C0] softirqs last disabled at (0): 0x0 
| [ 2504.656167][    C0] Tainted: [L]=SOFTLOCKUP
[ 2504.656168][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2504.656170][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2504.656181][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2504.656185][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2504.656188][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2504.656190][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2504.656193][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2504.656195][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2504.656197][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2504.656199][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2504.656201][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2504.656205][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2504.656207][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2504.656208][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2504.656210][    C0] PKRU: 55555554
[ 2504.656211][    C0] Call Trace:
[ 2504.656216][    C0]  <TASK>
[ 2504.656220][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2504.656224][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2504.656230][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2504.656234][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2504.656242][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2504.656245][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2504.656248][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2504.656251][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2504.656259][ C0] xa_store (lib/xarray.c:1734) 
[ 2504.656264][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2504.656270][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2504.656275][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2504.656278][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2504.656281][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2504.656288][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2504.656291][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2504.656300][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2504.656304][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2504.656309][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2504.656317][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2504.656322][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2504.656332][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2504.656336][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2504.656343][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2504.656348][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2504.656352][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2504.656357][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2504.656360][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2504.656364][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2504.656372][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2504.656376][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2504.656383][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2504.656388][    C0] RIP: 0033:0x7f439756d93b
[ 2504.656392][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2504.656395][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2504.656398][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2504.656400][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2504.656402][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2504.656404][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2504.656407][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2504.669125][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2504.669131][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2504.669135][ C1] softirqs last disabled at (0): 0x0 
| [ 2504.669144][    C1] Tainted: [L]=SOFTLOCKUP
[ 2504.669145][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2504.669147][ C1] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2504.669152][ C1] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2504.669155][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2504.669158][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2504.669160][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2504.669162][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2504.669164][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2504.669166][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2504.669168][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2504.669170][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2504.669174][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2504.669176][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2504.669177][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2504.669179][    C1] PKRU: 55555554
[ 2504.669180][    C1] Call Trace:
[ 2504.669181][    C1]  <TASK>
[ 2504.669184][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2504.669188][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2504.669192][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2504.669195][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2504.669201][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2504.669204][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2504.669207][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2504.669209][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2504.669215][ C1] xa_store (lib/xarray.c:1734) 
[ 2504.669219][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2504.669222][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2504.669227][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2504.669230][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2504.669233][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2504.669237][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2504.669241][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2504.669246][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2504.669250][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2504.669255][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2504.669259][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2504.669263][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2504.669270][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2504.669274][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2504.669278][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2504.669282][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2504.669285][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2504.669289][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2504.669292][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2504.669296][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2504.669301][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2504.669305][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2504.669309][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2504.669312][    C1] RIP: 0033:0x7f439756d93b
[ 2504.669316][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2504.669318][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2504.669321][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2504.669323][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2504.669325][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2504.669327][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2504.669329][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2504.670140][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2504.670145][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2504.670149][ C3] softirqs last disabled at (0): 0x0 
| [ 2504.670158][    C3] Tainted: [L]=SOFTLOCKUP
[ 2504.670160][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2504.670162][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2504.670167][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2504.670170][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2504.670173][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2504.670175][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2504.670178][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2504.670179][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2504.670182][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2504.670184][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2504.670186][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2504.670189][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2504.670192][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2504.670193][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2504.670195][    C3] PKRU: 55555554
[ 2504.670196][    C3] Call Trace:
[ 2504.670198][    C3]  <IRQ>
[ 2504.670200][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2504.670207][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2504.670212][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2504.670215][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2504.670220][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2504.670226][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2504.670229][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2504.670233][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2504.670236][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2504.670240][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2504.670243][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2504.670246][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2504.670249][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2504.670253][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2504.670257][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2504.670260][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2504.670263][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2504.670269][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2504.670273][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2504.670278][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2504.670282][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2504.670287][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2504.670291][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2504.670295][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2504.670298][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2504.670302][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2504.670305][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2504.670308][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2504.670315][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2504.670318][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2504.670321][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2504.670326][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2504.670330][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2504.670333][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2504.670336][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2504.670340][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2504.670344][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2504.670348][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2504.670352][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2504.670355][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2504.670361][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2504.670365][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2504.670369][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2504.670374][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2504.670379][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2504.670385][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2504.670389][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2504.670392][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2504.670396][    C3]  </IRQ>
[ 2504.670397][    C3]  <TASK>
[ 2504.670399][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2504.670403][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2504.670407][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2504.670409][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2504.670413][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2504.670415][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2504.670417][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2504.670419][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2504.670421][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2504.670425][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2504.670431][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2504.670437][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2504.670441][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2504.670446][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2504.670449][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2504.670453][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2504.670456][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2504.670461][ C3] xas_alloc (lib/xarray.c:378) 
[ 2504.670466][ C3] xas_create (lib/xarray.c:685) 
[ 2504.670473][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2504.670477][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2504.670486][ C3] __xa_store (lib/xarray.c:1703) 
[ 2504.670490][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2504.670495][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2504.670498][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2504.670501][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2504.670506][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2504.670510][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2504.670513][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2504.670518][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2504.670521][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2504.670523][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2504.670528][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2504.670531][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2504.670536][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2504.670540][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2504.670544][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2504.670548][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2504.670553][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2504.670560][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2504.670563][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2504.670567][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2504.670572][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2504.670575][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2504.670579][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2504.670581][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2504.670585][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2504.670590][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2504.670594][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2504.670598][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2504.670601][    C3] RIP: 0033:0x7f439756d93b
[ 2504.670605][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2504.670608][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2504.670611][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2504.670613][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2504.670615][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2504.670617][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2504.670619][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2508.669139][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2508.669149][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2508.669153][ C2] softirqs last disabled at (0): 0x0 
| [ 2508.669166][    C2] Tainted: [L]=SOFTLOCKUP
[ 2508.669173][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2508.669176][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2508.669185][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2508.669189][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2508.669192][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2508.669195][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2508.669197][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2508.669199][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2508.669201][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2508.669203][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2508.669205][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2508.669209][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2508.669211][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2508.669213][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2508.669214][    C2] PKRU: 55555554
[ 2508.669216][    C2] Call Trace:
[ 2508.669221][    C2]  <TASK>
[ 2508.669225][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2508.669229][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2508.669235][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2508.669240][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2508.669247][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2508.669251][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2508.669254][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2508.669256][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2508.669263][ C2] xa_store (lib/xarray.c:1734) 
[ 2508.669268][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2508.669275][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2508.669280][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2508.669283][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2508.669286][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2508.669293][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2508.669297][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2508.669305][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2508.669309][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2508.669314][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2508.669322][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2508.669327][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2508.669336][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2508.669340][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2508.669346][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2508.669352][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2508.669355][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2508.669360][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2508.669364][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2508.669368][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2508.669375][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2508.669381][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2508.669387][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2508.669393][    C2] RIP: 0033:0x7f439756d93b
[ 2508.669398][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2508.669401][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2508.669404][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2508.669406][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2508.669408][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2508.669410][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2508.669412][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2530.341121][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 2530.341404][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 2530.341647][    C1] NMI backtrace for cpu 1
| [ 2530.341662][    C1] Tainted: [L]=SOFTLOCKUP
[ 2530.341664][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2530.341667][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2530.341674][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2530.341678][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2530.341681][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2530.341683][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2530.341685][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2530.341687][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2530.341689][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2530.341691][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2530.341694][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2530.341697][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2530.341699][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2530.341701][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2530.341702][    C1] PKRU: 55555554
[ 2530.341703][    C1] Call Trace:
[ 2530.341705][    C1]  <TASK>
[ 2530.341707][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2530.341711][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2530.341715][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2530.341718][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2530.341725][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2530.341728][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2530.341731][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2530.341734][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2530.341741][ C1] xa_store (lib/xarray.c:1734) 
[ 2530.341745][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2530.341750][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2530.341755][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2530.341758][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2530.341761][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2530.341766][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2530.341769][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2530.341777][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2530.341781][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2530.341785][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2530.341792][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2530.341796][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2530.341804][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2530.341808][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2530.341814][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2530.341820][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2530.341824][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2530.341829][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2530.341832][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2530.341836][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2530.341843][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2530.341847][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2530.341851][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2530.341856][    C1] RIP: 0033:0x7f439756d93b
[ 2530.341860][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2530.341862][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2530.341865][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2530.341867][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2530.341869][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2530.341870][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2530.341872][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2530.341870][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 2530.341872][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2530.341878][    C1]  </TASK>
| [ 2530.342649][    C3] Tainted: [L]=SOFTLOCKUP
[ 2530.342650][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2530.342652][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2530.342657][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2530.342660][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2530.342664][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2530.342666][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2530.342668][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2530.342669][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2530.342671][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2530.342674][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2530.342676][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2530.342680][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2530.342681][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2530.342683][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2530.342685][    C3] PKRU: 55555554
[ 2530.342686][    C3] Call Trace:
[ 2530.342688][    C3]  <IRQ>
[ 2530.342689][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2530.342695][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2530.342700][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2530.342703][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2530.342707][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2530.342713][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2530.342716][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2530.342720][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2530.342723][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2530.342727][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2530.342729][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2530.342732][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2530.342735][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2530.342740][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2530.342743][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2530.342746][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2530.342749][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2530.342754][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2530.342757][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2530.342763][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2530.342766][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2530.342771][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2530.342776][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2530.342779][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2530.342781][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2530.342784][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2530.342788][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2530.342790][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2530.342797][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2530.342800][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2530.342803][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2530.342807][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2530.342811][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2530.342814][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2530.342817][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2530.342821][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2530.342825][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2530.342829][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2530.342833][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2530.342836][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2530.342842][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2530.342846][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2530.342849][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2530.342853][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2530.342857][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2530.342863][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2530.342866][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2530.342869][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2530.342873][    C3]  </IRQ>
[ 2530.342874][    C3]  <TASK>
[ 2530.342875][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2530.342879][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2530.342883][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2530.342885][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2530.342887][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2530.342889][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2530.342891][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2530.342892][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2530.342894][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2530.342898][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2530.342903][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2530.342908][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2530.342911][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2530.342915][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2530.342918][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2530.342922][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2530.342924][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2530.342929][ C3] xas_alloc (lib/xarray.c:378) 
[ 2530.342933][ C3] xas_create (lib/xarray.c:685) 
[ 2530.342939][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2530.342943][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2530.342947][ C3] __xa_store (lib/xarray.c:1703) 
[ 2530.342950][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2530.342955][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2530.342957][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2530.342960][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2530.342965][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2530.342969][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2530.342971][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2530.342976][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2530.342979][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2530.342981][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2530.342985][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2530.342988][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2530.342993][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2530.342996][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2530.343001][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2530.343004][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2530.343008][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2530.343014][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2530.343018][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2530.343022][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2530.343027][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2530.343030][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2530.343033][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2530.343036][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2530.343039][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2530.343044][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2530.343048][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2530.343052][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2530.343055][    C3] RIP: 0033:0x7f439756d93b
[ 2530.343059][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2530.343062][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2530.343064][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2530.343066][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2530.343068][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2530.343070][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2530.343071][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2532.656124][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2532.656130][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2532.656133][ C0] softirqs last disabled at (0): 0x0 
| [ 2532.656143][    C0] Tainted: [L]=SOFTLOCKUP
[ 2532.656144][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2532.656146][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2532.656151][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2532.656154][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2532.656157][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2532.656159][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2532.656161][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2532.656163][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2532.656165][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2532.656167][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2532.656170][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2532.656173][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2532.656175][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2532.656176][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2532.656178][    C0] PKRU: 55555554
[ 2532.656180][    C0] Call Trace:
[ 2532.656181][    C0]  <TASK>
[ 2532.656183][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2532.656187][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2532.656190][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2532.656194][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2532.656199][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2532.656202][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2532.656205][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2532.656207][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2532.656213][ C0] xa_store (lib/xarray.c:1734) 
[ 2532.656216][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2532.656220][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2532.656225][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2532.656228][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2532.656231][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2532.656235][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2532.656238][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2532.656244][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2532.656248][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2532.656252][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2532.656256][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2532.656260][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2532.656267][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2532.656271][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2532.656275][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2532.656280][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2532.656283][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2532.656287][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2532.656290][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2532.656293][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2532.656298][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2532.656302][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2532.656306][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2532.656309][    C0] RIP: 0033:0x7f439756d93b
[ 2532.656312][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2532.656315][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2532.656318][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2532.656320][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2532.656322][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2532.656323][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2532.656325][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2536.669121][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2536.669126][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2536.669130][ C2] softirqs last disabled at (0): 0x0 
| [ 2536.669139][    C2] Tainted: [L]=SOFTLOCKUP
[ 2536.669140][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2536.669142][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:89 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 2536.669146][ C2] Code: 11 80 38 00 74 ef 4d 8d 1c 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea eb 09 <48> 83 c0 01 48 39 d0 74 a5 80 38 00 74 f2 e9 74 ff ff ff b8 01 00
All code
========
   0:	11 80 38 00 74 ef    	adc    %eax,-0x108bffc8(%rax)
   6:	4d 8d 1c 2c          	lea    (%r12,%rbp,1),%r11
   a:	48 89 c2             	mov    %rax,%rdx
   d:	48 85 c0             	test   %rax,%rax
  10:	75 b0                	jne    0xffffffffffffffc2
  12:	48 89 da             	mov    %rbx,%rdx
  15:	4c 89 d8             	mov    %r11,%rax
  18:	4c 29 da             	sub    %r11,%rdx
  1b:	e9 49 ff ff ff       	jmp    0xffffffffffffff69
  20:	48 85 d2             	test   %rdx,%rdx
  23:	74 b3                	je     0xffffffffffffffd8
  25:	48 01 ea             	add    %rbp,%rdx
  28:	eb 09                	jmp    0x33
  2a:*	48 83 c0 01          	add    $0x1,%rax		<-- trapping instruction
  2e:	48 39 d0             	cmp    %rdx,%rax
  31:	74 a5                	je     0xffffffffffffffd8
  33:	80 38 00             	cmpb   $0x0,(%rax)
  36:	74 f2                	je     0x2a
  38:	e9 74 ff ff ff       	jmp    0xffffffffffffffb1
  3d:	b8                   	.byte 0xb8
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	48 83 c0 01          	add    $0x1,%rax
   4:	48 39 d0             	cmp    %rdx,%rax
   7:	74 a5                	je     0xffffffffffffffae
   9:	80 38 00             	cmpb   $0x0,(%rax)
   c:	74 f2                	je     0x0
   e:	e9 74 ff ff ff       	jmp    0xffffffffffffff87
  13:	b8                   	.byte 0xb8
  14:	01 00                	add    %eax,(%rax)
[ 2536.669150][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000246
[ 2536.669153][    C2] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 2536.669155][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2536.669157][    C2] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2536.669159][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2536.669161][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2536.669163][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2536.669166][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2536.669169][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2536.669171][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2536.669173][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2536.669175][    C2] PKRU: 55555554
[ 2536.669176][    C2] Call Trace:
[ 2536.669178][    C2]  <TASK>
[ 2536.669180][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2536.669185][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2536.669188][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2536.669192][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2536.669195][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2536.669200][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2536.669203][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2536.669206][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2536.669208][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2536.669214][ C2] xa_store (lib/xarray.c:1734) 
[ 2536.669218][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2536.669221][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2536.669226][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2536.669229][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2536.669232][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2536.669236][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2536.669240][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2536.669245][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2536.669249][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2536.669254][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2536.669258][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2536.669262][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2536.669269][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2536.669272][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2536.669277][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2536.669281][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2536.669285][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2536.669288][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2536.669291][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2536.669295][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2536.669300][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2536.669304][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2536.669308][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2536.669311][    C2] RIP: 0033:0x7f439756d93b
[ 2536.669315][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2536.669318][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2536.669321][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2536.669323][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2536.669325][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2536.669327][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2536.669329][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2556.669123][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2556.669129][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2556.669132][ C1] softirqs last disabled at (0): 0x0 
| [ 2556.669142][    C1] Tainted: [L]=SOFTLOCKUP
[ 2556.669143][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2556.669145][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2556.669150][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2556.669153][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2556.669156][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2556.669158][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2556.669160][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2556.669162][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2556.669165][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2556.669167][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2556.669169][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2556.669172][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2556.669174][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2556.669176][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2556.669177][    C1] PKRU: 55555554
[ 2556.669179][    C1] Call Trace:
[ 2556.669182][    C1]  <TASK>
[ 2556.669184][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2556.669188][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2556.669191][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2556.669194][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2556.669200][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2556.669203][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2556.669205][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2556.669208][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2556.669213][ C1] xa_store (lib/xarray.c:1734) 
[ 2556.669218][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2556.669221][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2556.669226][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2556.669229][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2556.669232][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2556.669236][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2556.669240][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2556.669245][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2556.669249][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2556.669254][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2556.669258][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2556.669263][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2556.669269][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2556.669273][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2556.669277][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2556.669282][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2556.669285][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2556.669290][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2556.669292][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2556.669296][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2556.669301][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2556.669305][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2556.669309][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2556.669312][    C1] RIP: 0033:0x7f439756d93b
[ 2556.669316][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2556.669319][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2556.669322][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2556.669324][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2556.669326][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2556.669328][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2556.669330][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2556.670123][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2556.670129][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2556.670132][ C3] softirqs last disabled at (0): 0x0 
| [ 2556.670142][    C3] Tainted: [L]=SOFTLOCKUP
[ 2556.670143][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2556.670145][ C3] RIP: 0010:kasan_check_range (./include/linux/kasan.h:64 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 2556.670149][ C3] Code: 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df <4d> 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d
All code
========
   0:	5b                   	pop    %rbx
   1:	5d                   	pop    %rbp
   2:	41 5c                	pop    %r12
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  10:	7f ff ff 
  13:	48 39 c7             	cmp    %rax,%rdi
  16:	76 dd                	jbe    0xfffffffffffffff5
  18:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  1d:	48 89 fd             	mov    %rdi,%rbp
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df 
  2a:*	4d 89 d1             	mov    %r10,%r9		<-- trapping instruction
  2d:	48 c1 ed 03          	shr    $0x3,%rbp
  31:	49 c1 e9 03          	shr    $0x3,%r9
  35:	48 01 c5             	add    %rax,%rbp
  38:	49 01 c1             	add    %rax,%r9
  3b:	48 89 e8             	mov    %rbp,%rax
  3e:	49                   	rex.WB
  3f:	8d                   	.byte 0x8d

Code starting with the faulting instruction
===========================================
   0:	4d 89 d1             	mov    %r10,%r9
   3:	48 c1 ed 03          	shr    $0x3,%rbp
   7:	49 c1 e9 03          	shr    $0x3,%r9
   b:	48 01 c5             	add    %rax,%rbp
   e:	49 01 c1             	add    %rax,%r9
  11:	48 89 e8             	mov    %rbp,%rax
  14:	49                   	rex.WB
  15:	8d                   	.byte 0x8d
[ 2556.670152][    C3] RSP: 0018:ffffc90000270a28 EFLAGS: 00000212
[ 2556.670155][    C3] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2556.670158][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2556.670160][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2556.670161][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2556.670163][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2556.670165][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2556.670168][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2556.670171][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2556.670174][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2556.670175][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2556.670177][    C3] PKRU: 55555554
[ 2556.670178][    C3] Call Trace:
[ 2556.670181][    C3]  <IRQ>
[ 2556.670184][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2556.670188][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2556.670193][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2556.670198][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2556.670201][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2556.670206][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2556.670212][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2556.670215][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2556.670219][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2556.670222][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2556.670226][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2556.670228][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2556.670231][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2556.670233][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2556.670238][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2556.670241][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2556.670244][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2556.670247][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2556.670252][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2556.670257][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2556.670262][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2556.670266][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2556.670271][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2556.670276][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2556.670279][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2556.670282][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2556.670285][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2556.670288][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2556.670291][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2556.670298][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2556.670302][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2556.670305][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2556.670309][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2556.670313][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2556.670316][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2556.670319][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2556.670323][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2556.670326][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2556.670330][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2556.670335][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2556.670338][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2556.670344][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2556.670348][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2556.670351][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2556.670356][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2556.670360][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2556.670366][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2556.670370][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2556.670373][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2556.670377][    C3]  </IRQ>
[ 2556.670378][    C3]  <TASK>
[ 2556.670380][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2556.670384][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2556.670387][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2556.670390][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2556.670393][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2556.670395][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2556.670397][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2556.670399][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2556.670401][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2556.670405][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2556.670411][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2556.670416][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2556.670420][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2556.670425][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2556.670427][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2556.670431][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2556.670434][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2556.670439][ C3] xas_alloc (lib/xarray.c:378) 
[ 2556.670443][ C3] xas_create (lib/xarray.c:685) 
[ 2556.670449][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2556.670454][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2556.670458][ C3] __xa_store (lib/xarray.c:1703) 
[ 2556.670461][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2556.670466][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2556.670469][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2556.670472][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2556.670476][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2556.670480][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2556.670483][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2556.670488][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2556.670490][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2556.670493][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2556.670497][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2556.670500][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2556.670505][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2556.670509][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2556.670513][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2556.670517][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2556.670521][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2556.670528][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2556.670532][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2556.670536][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2556.670540][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2556.670543][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2556.670547][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2556.670549][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2556.670553][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2556.670558][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2556.670562][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2556.670566][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2556.670569][    C3] RIP: 0033:0x7f439756d93b
[ 2556.670573][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2556.670575][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2556.670578][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2556.670580][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2556.670582][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2556.670584][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2556.670586][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2560.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2560.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2560.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 2560.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 2560.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2560.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2560.656144][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2560.656147][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2560.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2560.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2560.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2560.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2560.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2560.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2560.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2560.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2560.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2560.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2560.656172][    C0] PKRU: 55555554
[ 2560.656173][    C0] Call Trace:
[ 2560.656175][    C0]  <TASK>
[ 2560.656178][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2560.656182][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2560.656186][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2560.656189][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2560.656194][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2560.656197][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2560.656200][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2560.656203][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2560.656209][ C0] xa_store (lib/xarray.c:1734) 
[ 2560.656213][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2560.656216][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2560.656222][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2560.656224][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2560.656227][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2560.656232][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2560.656235][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2560.656241][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2560.656244][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2560.656249][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2560.656253][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2560.656258][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2560.656264][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2560.656268][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2560.656273][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2560.656277][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2560.656280][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2560.656284][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2560.656287][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2560.656291][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2560.656296][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2560.656300][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2560.656304][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2560.656307][    C0] RIP: 0033:0x7f439756d93b
[ 2560.656310][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2560.656313][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2560.656316][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2560.656319][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2560.656321][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2560.656322][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2560.656325][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2564.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2564.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2564.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 2564.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 2564.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2564.669140][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:87 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 2564.669145][ C2] Code: 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 a5 <80> 38 00 74 f2 e9 74 ff ff ff b8 01 00 00 00 e9 cb 80 38 02 48 29
All code
========
   0:	2c 48                	sub    $0x48,%al
   2:	89 c2                	mov    %eax,%edx
   4:	48 85 c0             	test   %rax,%rax
   7:	75 b0                	jne    0xffffffffffffffb9
   9:	48 89 da             	mov    %rbx,%rdx
   c:	4c 89 d8             	mov    %r11,%rax
   f:	4c 29 da             	sub    %r11,%rdx
  12:	e9 49 ff ff ff       	jmp    0xffffffffffffff60
  17:	48 85 d2             	test   %rdx,%rdx
  1a:	74 b3                	je     0xffffffffffffffcf
  1c:	48 01 ea             	add    %rbp,%rdx
  1f:	eb 09                	jmp    0x2a
  21:	48 83 c0 01          	add    $0x1,%rax
  25:	48 39 d0             	cmp    %rdx,%rax
  28:	74 a5                	je     0xffffffffffffffcf
  2a:*	80 38 00             	cmpb   $0x0,(%rax)		<-- trapping instruction
  2d:	74 f2                	je     0x21
  2f:	e9 74 ff ff ff       	jmp    0xffffffffffffffa8
  34:	b8 01 00 00 00       	mov    $0x1,%eax
  39:	e9 cb 80 38 02       	jmp    0x2388109
  3e:	48                   	rex.W
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	80 38 00             	cmpb   $0x0,(%rax)
   3:	74 f2                	je     0xfffffffffffffff7
   5:	e9 74 ff ff ff       	jmp    0xffffffffffffff7e
   a:	b8 01 00 00 00       	mov    $0x1,%eax
   f:	e9 cb 80 38 02       	jmp    0x23880df
  14:	48                   	rex.W
  15:	29                   	.byte 0x29
[ 2564.669148][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000286
[ 2564.669151][    C2] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 2564.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2564.669155][    C2] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2564.669157][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2564.669159][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2564.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2564.669164][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2564.669168][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2564.669170][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2564.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2564.669173][    C2] PKRU: 55555554
[ 2564.669174][    C2] Call Trace:
[ 2564.669176][    C2]  <TASK>
[ 2564.669179][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2564.669184][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2564.669187][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2564.669191][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2564.669194][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2564.669199][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2564.669202][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2564.669205][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2564.669208][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2564.669213][ C2] xa_store (lib/xarray.c:1734) 
[ 2564.669217][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2564.669221][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2564.669226][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2564.669229][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2564.669232][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2564.669236][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2564.669240][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2564.669245][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2564.669249][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2564.669254][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2564.669258][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2564.669262][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2564.669268][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2564.669272][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2564.669276][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2564.669281][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2564.669284][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2564.669288][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2564.669291][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2564.669294][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2564.669299][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2564.669303][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2564.669307][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2564.669310][    C2] RIP: 0033:0x7f439756d93b
[ 2564.669313][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2564.669316][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2564.669319][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2564.669321][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2564.669323][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2564.669325][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2564.669327][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2584.669138][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2584.669148][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2584.669152][ C1] softirqs last disabled at (0): 0x0 
| [ 2584.669166][    C1] Tainted: [L]=SOFTLOCKUP
[ 2584.669168][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2584.669171][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2584.669180][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2584.669183][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2584.669186][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2584.669188][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2584.669191][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2584.669193][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2584.669195][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2584.669197][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2584.669199][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2584.669203][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2584.669205][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2584.669207][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2584.669208][    C1] PKRU: 55555554
[ 2584.669210][    C1] Call Trace:
[ 2584.669215][    C1]  <TASK>
[ 2584.669219][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2584.669223][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2584.669228][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2584.669233][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2584.669240][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2584.669243][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2584.669246][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2584.669249][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2584.669256][ C1] xa_store (lib/xarray.c:1734) 
[ 2584.669261][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2584.669266][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2584.669271][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2584.669274][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2584.669277][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2584.669283][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2584.669287][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2584.669295][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2584.669299][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2584.669304][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2584.669312][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2584.669317][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2584.669326][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2584.669330][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2584.669335][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2584.669341][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2584.669344][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2584.669350][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2584.669353][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2584.669356][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2584.669363][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2584.669367][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2584.669373][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2584.669378][    C1] RIP: 0033:0x7f439756d93b
[ 2584.669383][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2584.669385][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2584.669388][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2584.669391][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2584.669393][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2584.669394][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2584.669396][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2584.670125][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2584.670130][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2584.670134][ C3] softirqs last disabled at (0): 0x0 
| [ 2584.670144][    C3] Tainted: [L]=SOFTLOCKUP
[ 2584.670145][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2584.670147][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2584.670153][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2584.670156][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2584.670158][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2584.670161][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2584.670163][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2584.670165][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2584.670167][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2584.670168][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2584.670171][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2584.670174][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2584.670176][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2584.670178][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2584.670179][    C3] PKRU: 55555554
[ 2584.670180][    C3] Call Trace:
[ 2584.670183][    C3]  <IRQ>
[ 2584.670185][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2584.670191][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2584.670196][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2584.670199][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2584.670205][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2584.670211][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2584.670214][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2584.670217][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2584.670221][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2584.670224][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2584.670227][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2584.670230][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2584.670232][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2584.670237][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2584.670241][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2584.670244][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2584.670247][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2584.670253][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2584.670258][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2584.670263][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2584.670267][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2584.670272][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2584.670277][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2584.670280][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2584.670283][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2584.670287][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2584.670290][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2584.670293][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2584.670300][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2584.670303][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2584.670306][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2584.670310][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2584.670314][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2584.670318][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2584.670321][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2584.670325][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2584.670329][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2584.670333][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2584.670337][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2584.670340][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2584.670346][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2584.670349][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2584.670353][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2584.670357][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2584.670361][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2584.670367][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2584.670371][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2584.670374][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2584.670378][    C3]  </IRQ>
[ 2584.670379][    C3]  <TASK>
[ 2584.670380][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2584.670385][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2584.670388][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2584.670391][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2584.670394][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2584.670396][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2584.670398][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2584.670400][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2584.670402][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2584.670406][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2584.670412][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2584.670418][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2584.670421][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2584.670426][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2584.670429][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2584.670433][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2584.670436][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2584.670440][ C3] xas_alloc (lib/xarray.c:378) 
[ 2584.670445][ C3] xas_create (lib/xarray.c:685) 
[ 2584.670451][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2584.670456][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2584.670459][ C3] __xa_store (lib/xarray.c:1703) 
[ 2584.670463][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2584.670468][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2584.670471][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2584.670474][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2584.670479][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2584.670483][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2584.670486][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2584.670491][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2584.670493][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2584.670496][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2584.670500][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2584.670504][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2584.670508][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2584.670512][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2584.670517][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2584.670520][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2584.670525][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2584.670532][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2584.670535][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2584.670540][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2584.670544][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2584.670547][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2584.670551][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2584.670554][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2584.670557][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2584.670562][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2584.670566][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2584.670571][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2584.670574][    C3] RIP: 0033:0x7f439756d93b
[ 2584.670577][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2584.670580][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2584.670583][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2584.670585][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2584.670587][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2584.670589][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2584.670591][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2588.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2588.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2588.656129][ C0] softirqs last disabled at (0): 0x0 
| [ 2588.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 2588.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2588.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2588.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2588.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2588.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2588.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2588.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2588.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2588.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2588.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2588.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2588.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2588.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2588.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2588.656172][    C0] PKRU: 55555554
[ 2588.656173][    C0] Call Trace:
[ 2588.656175][    C0]  <TASK>
[ 2588.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2588.656180][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2588.656184][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2588.656188][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2588.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2588.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2588.656199][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2588.656201][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2588.656207][ C0] xa_store (lib/xarray.c:1734) 
[ 2588.656210][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2588.656214][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2588.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2588.656222][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2588.656224][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2588.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2588.656233][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2588.656238][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2588.656242][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2588.656247][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2588.656251][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2588.656255][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2588.656262][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2588.656266][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2588.656270][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2588.656274][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2588.656277][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2588.656281][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2588.656284][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2588.656288][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2588.656293][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2588.656297][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2588.656301][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2588.656304][    C0] RIP: 0033:0x7f439756d93b
[ 2588.656306][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2588.656309][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2588.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2588.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2588.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2588.656318][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2588.656320][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2592.669142][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2592.669152][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2592.669155][ C2] softirqs last disabled at (0): 0x0 
| [ 2592.669170][    C2] Tainted: [L]=SOFTLOCKUP
[ 2592.669172][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2592.669174][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2592.669184][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2592.669188][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2592.669191][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2592.669193][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2592.669196][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2592.669197][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2592.669200][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2592.669202][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2592.669205][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2592.669209][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2592.669211][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2592.669212][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2592.669214][    C2] PKRU: 55555554
[ 2592.669215][    C2] Call Trace:
[ 2592.669221][    C2]  <TASK>
[ 2592.669225][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2592.669230][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2592.669236][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2592.669240][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2592.669247][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2592.669251][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2592.669254][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2592.669257][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2592.669265][ C2] xa_store (lib/xarray.c:1734) 
[ 2592.669270][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2592.669276][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2592.669282][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2592.669285][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2592.669288][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2592.669294][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2592.669298][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2592.669306][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2592.669310][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2592.669315][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2592.669323][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2592.669328][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2592.669337][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2592.669342][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2592.669348][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2592.669354][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2592.669357][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2592.669362][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2592.669366][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2592.669370][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2592.669377][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2592.669381][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2592.669388][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2592.669393][    C2] RIP: 0033:0x7f439756d93b
[ 2592.669398][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2592.669400][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2592.669404][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2592.669406][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2592.669408][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2592.669410][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2592.669412][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2608.354825][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 2608.355136][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 2608.355550][    C1] NMI backtrace for cpu 1
| [ 2608.355567][    C1] Tainted: [L]=SOFTLOCKUP
[ 2608.355568][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2608.355571][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2608.355579][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2608.355583][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2608.355586][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2608.355589][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2608.355591][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2608.355593][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2608.355595][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2608.355597][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2608.355600][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2608.355603][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2608.355605][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2608.355607][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2608.355608][    C1] PKRU: 55555554
[ 2608.355610][    C1] Call Trace:
[ 2608.355611][    C1]  <TASK>
[ 2608.355613][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2608.355617][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2608.355622][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2608.355625][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2608.355633][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2608.355636][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2608.355639][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2608.355642][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2608.355650][ C1] xa_store (lib/xarray.c:1734) 
[ 2608.355653][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2608.355659][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2608.355664][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2608.355667][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2608.355670][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2608.355675][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2608.355678][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2608.355686][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2608.355690][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2608.355695][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2608.355701][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2608.355706][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2608.355713][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2608.355717][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2608.355724][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2608.355731][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2608.355734][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2608.355739][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2608.355742][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2608.355746][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2608.355753][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2608.355757][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2608.355762][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2608.355766][    C1] RIP: 0033:0x7f439756d93b
[ 2608.355770][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2608.355773][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2608.355776][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2608.355778][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2608.355780][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2608.355781][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2608.355784][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2608.355781][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 2608.355784][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2608.355789][    C1]  </TASK>
| [ 2608.356552][    C3] Tainted: [L]=SOFTLOCKUP
[ 2608.356554][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2608.356555][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2608.356560][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2608.356563][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2608.356566][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2608.356568][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2608.356570][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2608.356572][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2608.356574][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2608.356576][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2608.356579][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2608.356582][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2608.356584][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2608.356586][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2608.356588][    C3] PKRU: 55555554
[ 2608.356589][    C3] Call Trace:
[ 2608.356590][    C3]  <IRQ>
[ 2608.356592][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2608.356598][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2608.356603][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2608.356606][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2608.356609][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2608.356615][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2608.356618][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2608.356622][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2608.356624][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2608.356628][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2608.356630][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2608.356633][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2608.356636][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2608.356640][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2608.356643][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2608.356646][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2608.356649][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2608.356654][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2608.356658][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2608.356663][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2608.356667][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2608.356672][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2608.356676][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2608.356679][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2608.356682][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2608.356686][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2608.356689][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2608.356692][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2608.356698][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2608.356701][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2608.356704][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2608.356709][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2608.356712][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2608.356716][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2608.356718][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2608.356723][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2608.356726][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2608.356730][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2608.356735][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2608.356738][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2608.356743][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2608.356747][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2608.356750][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2608.356755][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2608.356759][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2608.356764][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2608.356767][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2608.356770][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2608.356773][    C3]  </IRQ>
[ 2608.356775][    C3]  <TASK>
[ 2608.356776][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2608.356779][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2608.356783][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2608.356785][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2608.356787][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2608.356789][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2608.356790][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2608.356792][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2608.356794][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2608.356798][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2608.356803][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2608.356808][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2608.356811][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2608.356816][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2608.356818][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2608.356822][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2608.356825][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2608.356829][ C3] xas_alloc (lib/xarray.c:378) 
[ 2608.356833][ C3] xas_create (lib/xarray.c:685) 
[ 2608.356839][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2608.356843][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2608.356847][ C3] __xa_store (lib/xarray.c:1703) 
[ 2608.356850][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2608.356855][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2608.356857][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2608.356860][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2608.356865][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2608.356869][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2608.356872][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2608.356876][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2608.356879][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2608.356881][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2608.356885][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2608.356889][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2608.356893][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2608.356897][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2608.356901][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2608.356905][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2608.356909][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2608.356914][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2608.356918][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2608.356922][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2608.356927][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2608.356930][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2608.356933][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2608.356936][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2608.356939][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2608.356944][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2608.356948][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2608.356952][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2608.356955][    C3] RIP: 0033:0x7f439756d93b
[ 2608.356959][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2608.356961][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2608.356964][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2608.356965][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2608.356967][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2608.356968][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2608.356970][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2616.656151][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2616.656161][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2616.656165][ C0] softirqs last disabled at (0): 0x0 
| [ 2616.656179][    C0] Tainted: [L]=SOFTLOCKUP
[ 2616.656180][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2616.656183][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 2616.656191][ C0] Code: 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff <5b> b8 01 00 00 00 5d 41 5c c3 cc cc cc cc 41 bc 08 00 00 00 45 29
All code
========
   0:	00 74 f2 48          	add    %dh,0x48(%rdx,%rsi,8)
   4:	89 c2                	mov    %eax,%edx
   6:	b8 01 00 00 00       	mov    $0x1,%eax
   b:	48 85 d2             	test   %rdx,%rdx
   e:	0f 84 4c ff ff ff    	je     0xffffffffffffff60
  14:	41 83 e2 07          	and    $0x7,%r10d
  18:	49 39 d1             	cmp    %rdx,%r9
  1b:	0f 85 34 ff ff ff    	jne    0xffffffffffffff55
  21:	45 3a 11             	cmp    (%r9),%r10b
  24:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff55
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	b8 01 00 00 00       	mov    $0x1,%eax
  30:	5d                   	pop    %rbp
  31:	41 5c                	pop    %r12
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  3e:	45                   	rex.RB
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	b8 01 00 00 00       	mov    $0x1,%eax
   6:	5d                   	pop    %rbp
   7:	41 5c                	pop    %r12
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  14:	45                   	rex.RB
  15:	29                   	.byte 0x29
[ 2616.656194][    C0] RSP: 0018:ffffc900034c79f8 EFLAGS: 00000246
[ 2616.656197][    C0] RAX: fffffbfff77dcb81 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 2616.656200][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2616.656202][    C0] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2616.656204][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2616.656206][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2616.656209][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2616.656211][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2616.656215][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2616.656217][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2616.656219][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2616.656221][    C0] PKRU: 55555554
[ 2616.656222][    C0] Call Trace:
[ 2616.656227][    C0]  <TASK>
[ 2616.656232][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2616.656242][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2616.656246][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2616.656251][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2616.656256][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2616.656263][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2616.656267][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2616.656270][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2616.656273][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2616.656280][ C0] xa_store (lib/xarray.c:1734) 
[ 2616.656285][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2616.656291][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2616.656296][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2616.656299][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2616.656302][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2616.656309][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2616.656312][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2616.656320][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2616.656324][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2616.656329][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2616.656337][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2616.656342][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2616.656351][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2616.656355][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2616.656362][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2616.656367][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2616.656370][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2616.656375][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2616.656379][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2616.656382][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2616.656390][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2616.656394][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2616.656400][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2616.656405][    C0] RIP: 0033:0x7f439756d93b
[ 2616.656410][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2616.656413][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2616.656417][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2616.656419][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2616.656421][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2616.656423][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2616.656425][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2620.669129][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2620.669136][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2620.669139][ C2] softirqs last disabled at (0): 0x0 
| [ 2620.669150][    C2] Tainted: [L]=SOFTLOCKUP
[ 2620.669151][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2620.669153][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2620.669160][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2620.669164][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2620.669166][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2620.669169][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2620.669171][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2620.669173][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2620.669175][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2620.669177][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2620.669179][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2620.669183][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2620.669185][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2620.669186][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2620.669188][    C2] PKRU: 55555554
[ 2620.669189][    C2] Call Trace:
[ 2620.669193][    C2]  <TASK>
[ 2620.669197][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2620.669200][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2620.669204][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2620.669208][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2620.669214][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2620.669217][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2620.669220][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2620.669223][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2620.669229][ C2] xa_store (lib/xarray.c:1734) 
[ 2620.669233][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2620.669238][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2620.669243][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2620.669246][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2620.669249][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2620.669254][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2620.669258][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2620.669264][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2620.669268][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2620.669273][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2620.669280][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2620.669284][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2620.669292][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2620.669296][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2620.669301][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2620.669306][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2620.669310][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2620.669314][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2620.669317][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2620.669321][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2620.669328][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2620.669332][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2620.669337][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2620.669342][    C2] RIP: 0033:0x7f439756d93b
[ 2620.669346][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2620.669349][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2620.669352][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2620.669354][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2620.669356][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2620.669358][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2620.669359][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2632.669124][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2632.669129][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2632.669133][ C1] softirqs last disabled at (0): 0x0 
| [ 2632.669142][    C1] Tainted: [L]=SOFTLOCKUP
[ 2632.669144][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2632.669146][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2632.669151][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2632.669155][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2632.669157][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2632.669159][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2632.669161][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2632.669163][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2632.669166][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2632.669168][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2632.669170][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2632.669174][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2632.669176][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2632.669177][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2632.669179][    C1] PKRU: 55555554
[ 2632.669180][    C1] Call Trace:
[ 2632.669182][    C1]  <TASK>
[ 2632.669185][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2632.669189][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2632.669193][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2632.669196][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2632.669202][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2632.669205][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2632.669208][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2632.669211][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2632.669216][ C1] xa_store (lib/xarray.c:1734) 
[ 2632.669220][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2632.669224][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2632.669229][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2632.669232][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2632.669234][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2632.669239][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2632.669243][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2632.669249][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2632.669252][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2632.669257][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2632.669261][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2632.669265][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2632.669272][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2632.669276][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2632.669280][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2632.669284][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2632.669288][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2632.669291][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2632.669294][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2632.669298][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2632.669304][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2632.669307][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2632.669312][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2632.669315][    C1] RIP: 0033:0x7f439756d93b
[ 2632.669319][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2632.669322][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2632.669325][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2632.669327][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2632.669329][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2632.669331][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2632.669333][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2632.670152][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2632.670160][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2632.670164][ C3] softirqs last disabled at (0): 0x0 
| [ 2632.670176][    C3] Tainted: [L]=SOFTLOCKUP
[ 2632.670177][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2632.670180][ C3] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 2632.670186][ C3] Code: ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 <49> 01 c1 48 89 e8 49 8d 59 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	7f ff                	jg     0x3
   4:	ff 48 39             	decl   0x39(%rax)
   7:	c7                   	(bad)
   8:	76 dd                	jbe    0xffffffffffffffe7
   a:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df 
  1c:	4d 89 d1             	mov    %r10,%r9
  1f:	48 c1 ed 03          	shr    $0x3,%rbp
  23:	49 c1 e9 03          	shr    $0x3,%r9
  27:	48 01 c5             	add    %rax,%rbp
  2a:*	49 01 c1             	add    %rax,%r9		<-- trapping instruction
  2d:	48 89 e8             	mov    %rbp,%rax
  30:	49 8d 59 01          	lea    0x1(%r9),%rbx
  34:	48 89 da             	mov    %rbx,%rdx
  37:	48 29 ea             	sub    %rbp,%rdx
  3a:	48 83 fa 10          	cmp    $0x10,%rdx
  3e:	0f                   	.byte 0xf
  3f:	8e                   	.byte 0x8e

Code starting with the faulting instruction
===========================================
   0:	49 01 c1             	add    %rax,%r9
   3:	48 89 e8             	mov    %rbp,%rax
   6:	49 8d 59 01          	lea    0x1(%r9),%rbx
   a:	48 89 da             	mov    %rbx,%rdx
   d:	48 29 ea             	sub    %rbp,%rdx
  10:	48 83 fa 10          	cmp    $0x10,%rdx
  14:	0f                   	.byte 0xf
  15:	8e                   	.byte 0x8e
[ 2632.670189][    C3] RSP: 0018:ffffc90000270a28 EFLAGS: 00000282
[ 2632.670192][    C3] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2632.670194][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2632.670196][    C3] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: 1ffffffff77dcb80
[ 2632.670198][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2632.670200][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2632.670202][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2632.670204][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2632.670209][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2632.670211][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2632.670212][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2632.670214][    C3] PKRU: 55555554
[ 2632.670215][    C3] Call Trace:
[ 2632.670219][    C3]  <IRQ>
[ 2632.670223][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2632.670230][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2632.670235][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2632.670241][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2632.670244][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2632.670250][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2632.670256][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2632.670260][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2632.670264][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2632.670268][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2632.670272][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2632.670274][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2632.670277][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2632.670280][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2632.670286][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2632.670290][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2632.670293][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2632.670297][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2632.670302][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2632.670306][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2632.670312][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2632.670316][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2632.670322][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2632.670327][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2632.670330][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2632.670333][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2632.670337][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2632.670340][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2632.670343][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2632.670351][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2632.670354][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2632.670357][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2632.670361][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2632.670366][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2632.670369][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2632.670372][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2632.670377][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2632.670380][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2632.670385][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2632.670389][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2632.670392][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2632.670398][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2632.670402][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2632.670405][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2632.670410][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2632.670415][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2632.670421][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2632.670425][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2632.670428][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2632.670432][    C3]  </IRQ>
[ 2632.670433][    C3]  <TASK>
[ 2632.670435][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2632.670441][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2632.670444][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2632.670447][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2632.670450][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2632.670453][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2632.670454][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2632.670456][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2632.670459][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2632.670463][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2632.670469][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2632.670475][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2632.670478][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2632.670483][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2632.670486][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2632.670490][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2632.670493][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2632.670498][ C3] xas_alloc (lib/xarray.c:378) 
[ 2632.670503][ C3] xas_create (lib/xarray.c:685) 
[ 2632.670509][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2632.670514][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2632.670517][ C3] __xa_store (lib/xarray.c:1703) 
[ 2632.670521][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2632.670526][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2632.670529][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2632.670532][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2632.670537][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2632.670541][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2632.670544][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2632.670549][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2632.670552][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2632.670555][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2632.670559][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2632.670562][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2632.670567][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2632.670571][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2632.670576][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2632.670580][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2632.670584][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2632.670592][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2632.670596][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2632.670601][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2632.670605][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2632.670609][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2632.670612][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2632.670615][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2632.670619][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2632.670625][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2632.670629][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2632.670634][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2632.670637][    C3] RIP: 0033:0x7f439756d93b
[ 2632.670642][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2632.670645][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2632.670648][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2632.670650][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2632.670652][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2632.670654][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2632.670656][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2644.656122][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2644.656128][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2644.656132][ C0] softirqs last disabled at (0): 0x0 
| [ 2644.656141][    C0] Tainted: [L]=SOFTLOCKUP
[ 2644.656143][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2644.656145][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2644.656150][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2644.656153][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2644.656156][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2644.656158][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2644.656160][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2644.656162][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2644.656164][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2644.656167][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2644.656169][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2644.656172][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2644.656174][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2644.656176][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2644.656177][    C0] PKRU: 55555554
[ 2644.656179][    C0] Call Trace:
[ 2644.656180][    C0]  <TASK>
[ 2644.656183][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2644.656187][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2644.656190][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2644.656194][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2644.656199][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2644.656202][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2644.656204][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2644.656207][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2644.656213][ C0] xa_store (lib/xarray.c:1734) 
[ 2644.656216][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2644.656221][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2644.656226][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2644.656229][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2644.656232][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2644.656236][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2644.656240][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2644.656245][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2644.656249][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2644.656254][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2644.656258][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2644.656262][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2644.656269][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2644.656273][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2644.656277][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2644.656282][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2644.656285][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2644.656289][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2644.656292][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2644.656295][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2644.656301][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2644.656305][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2644.656309][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2644.656313][    C0] RIP: 0033:0x7f439756d93b
[ 2644.656316][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2644.656319][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2644.656322][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2644.656324][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2644.656326][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2644.656328][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2644.656330][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2648.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2648.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2648.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 2648.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 2648.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2648.669141][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2648.669146][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2648.669149][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2648.669152][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2648.669154][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2648.669156][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2648.669158][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2648.669160][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2648.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2648.669164][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2648.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2648.669169][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2648.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2648.669172][    C2] PKRU: 55555554
[ 2648.669174][    C2] Call Trace:
[ 2648.669175][    C2]  <TASK>
[ 2648.669178][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2648.669182][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2648.669186][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2648.669189][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2648.669194][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2648.669197][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2648.669199][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2648.669202][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2648.669208][ C2] xa_store (lib/xarray.c:1734) 
[ 2648.669212][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2648.669215][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2648.669220][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2648.669223][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2648.669226][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2648.669230][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2648.669234][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2648.669239][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2648.669243][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2648.669247][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2648.669251][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2648.669256][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2648.669262][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2648.669265][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2648.669269][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2648.669274][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2648.669278][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2648.669281][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2648.669284][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2648.669288][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2648.669293][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2648.669296][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2648.669301][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2648.669304][    C2] RIP: 0033:0x7f439756d93b
[ 2648.669307][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2648.669310][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2648.669313][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2648.669315][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2648.669317][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2648.669319][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2648.669321][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2660.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2660.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2660.669129][ C1] softirqs last disabled at (0): 0x0 
| [ 2660.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 2660.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2660.669141][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2660.669146][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2660.669149][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2660.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2660.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2660.669156][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2660.669157][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2660.669159][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2660.669161][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2660.669164][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2660.669168][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2660.669170][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2660.669171][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2660.669173][    C1] PKRU: 55555554
[ 2660.669174][    C1] Call Trace:
[ 2660.669176][    C1]  <TASK>
[ 2660.669178][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2660.669182][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2660.669185][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2660.669188][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2660.669193][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2660.669196][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2660.669199][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2660.669201][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2660.669207][ C1] xa_store (lib/xarray.c:1734) 
[ 2660.669211][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2660.669214][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2660.669219][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2660.669222][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2660.669225][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2660.669230][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2660.669233][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2660.669239][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2660.669242][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2660.669247][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2660.669251][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2660.669255][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2660.669262][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2660.669265][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2660.669269][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2660.669274][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2660.669278][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2660.669281][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2660.669284][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2660.669288][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2660.669293][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2660.669296][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2660.669301][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2660.669303][    C1] RIP: 0033:0x7f439756d93b
[ 2660.669307][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2660.669309][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2660.669312][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2660.669314][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2660.669316][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2660.669319][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2660.669321][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2660.670152][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2660.670160][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2660.670164][ C3] softirqs last disabled at (0): 0x0 
| [ 2660.670176][    C3] Tainted: [L]=SOFTLOCKUP
[ 2660.670177][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2660.670180][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:103 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 2660.670186][ C3] Code: 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d 59 01 48 89 da <48> 29 ea 48 83 fa 10 0f 8e c0 00 00 00 41 89 eb 41 83 e3 07 75 7d
All code
========
   0:	37                   	(bad)
   1:	ff 48 89             	decl   -0x77(%rax)
   4:	fd                   	std
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	4d 89 d1             	mov    %r10,%r9
  12:	48 c1 ed 03          	shr    $0x3,%rbp
  16:	49 c1 e9 03          	shr    $0x3,%r9
  1a:	48 01 c5             	add    %rax,%rbp
  1d:	49 01 c1             	add    %rax,%r9
  20:	48 89 e8             	mov    %rbp,%rax
  23:	49 8d 59 01          	lea    0x1(%r9),%rbx
  27:	48 89 da             	mov    %rbx,%rdx
  2a:*	48 29 ea             	sub    %rbp,%rdx		<-- trapping instruction
  2d:	48 83 fa 10          	cmp    $0x10,%rdx
  31:	0f 8e c0 00 00 00    	jle    0xf7
  37:	41 89 eb             	mov    %ebp,%r11d
  3a:	41 83 e3 07          	and    $0x7,%r11d
  3e:	75 7d                	jne    0xbd

Code starting with the faulting instruction
===========================================
   0:	48 29 ea             	sub    %rbp,%rdx
   3:	48 83 fa 10          	cmp    $0x10,%rdx
   7:	0f 8e c0 00 00 00    	jle    0xcd
   d:	41 89 eb             	mov    %ebp,%r11d
  10:	41 83 e3 07          	and    $0x7,%r11d
  14:	75 7d                	jne    0x93
[ 2660.670189][    C3] RSP: 0018:ffffc90000270a28 EFLAGS: 00000282
[ 2660.670192][    C3] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 2660.670194][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2660.670196][    C3] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2660.670198][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2660.670201][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2660.670203][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2660.670205][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2660.670209][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2660.670211][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2660.670213][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2660.670215][    C3] PKRU: 55555554
[ 2660.670216][    C3] Call Trace:
[ 2660.670219][    C3]  <IRQ>
[ 2660.670222][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2660.670230][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2660.670235][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2660.670239][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2660.670242][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2660.670248][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2660.670252][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2660.670255][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2660.670260][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2660.670263][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2660.670267][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2660.670269][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2660.670273][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2660.670275][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2660.670281][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2660.670285][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2660.670288][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2660.670292][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2660.670297][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2660.670302][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2660.670307][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2660.670312][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2660.670319][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2660.670325][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2660.670328][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2660.670332][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2660.670335][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2660.670338][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2660.670341][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2660.670347][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2660.670350][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2660.670353][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2660.670358][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2660.670362][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2660.670366][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2660.670368][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2660.670372][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2660.670375][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2660.670380][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2660.670384][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2660.670387][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2660.670392][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2660.670397][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2660.670400][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2660.670405][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2660.670409][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2660.670416][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2660.670419][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2660.670423][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2660.670427][    C3]  </IRQ>
[ 2660.670429][    C3]  <TASK>
[ 2660.670430][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2660.670436][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2660.670439][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2660.670442][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2660.670445][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2660.670447][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2660.670449][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2660.670451][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2660.670453][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2660.670457][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2660.670463][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2660.670469][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2660.670473][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2660.670477][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2660.670480][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2660.670485][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2660.670488][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2660.670493][ C3] xas_alloc (lib/xarray.c:378) 
[ 2660.670497][ C3] xas_create (lib/xarray.c:685) 
[ 2660.670503][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2660.670508][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2660.670511][ C3] __xa_store (lib/xarray.c:1703) 
[ 2660.670515][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2660.670520][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2660.670523][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2660.670526][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2660.670531][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2660.670534][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2660.670538][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2660.670543][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2660.670546][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2660.670549][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2660.670552][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2660.670556][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2660.670561][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2660.670564][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2660.670569][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2660.670574][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2660.670578][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2660.670586][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2660.670590][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2660.670595][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2660.670600][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2660.670603][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2660.670607][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2660.670609][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2660.670613][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2660.670619][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2660.670623][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2660.670629][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2660.670632][    C3] RIP: 0033:0x7f439756d93b
[ 2660.670636][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2660.670640][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2660.670643][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2660.670645][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2660.670647][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2660.670649][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2660.670651][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2672.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2672.656126][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2672.656129][ C0] softirqs last disabled at (0): 0x0 
| [ 2672.656138][    C0] Tainted: [L]=SOFTLOCKUP
[ 2672.656139][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2672.656141][ C0] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2672.656146][ C0] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2672.656149][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2672.656152][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2672.656154][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2672.656156][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2672.656158][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2672.656160][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2672.656162][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2672.656165][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2672.656168][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2672.656170][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2672.656172][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2672.656173][    C0] PKRU: 55555554
[ 2672.656175][    C0] Call Trace:
[ 2672.656176][    C0]  <TASK>
[ 2672.656179][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2672.656182][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2672.656186][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2672.656189][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2672.656194][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2672.656197][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2672.656200][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2672.656203][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2672.656208][ C0] xa_store (lib/xarray.c:1734) 
[ 2672.656212][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2672.656215][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2672.656220][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2672.656223][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2672.656226][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2672.656231][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2672.656234][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2672.656240][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2672.656244][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2672.656248][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2672.656253][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2672.656257][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2672.656264][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2672.656267][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2672.656272][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2672.656276][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2672.656280][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2672.656283][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2672.656286][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2672.656290][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2672.656295][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2672.656298][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2672.656303][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2672.656307][    C0] RIP: 0033:0x7f439756d93b
[ 2672.656310][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2672.656313][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2672.656316][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2672.656318][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2672.656320][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2672.656322][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2672.656324][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2676.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2676.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2676.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 2676.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 2676.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2676.669141][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2676.669146][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2676.669149][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2676.669152][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2676.669154][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2676.669156][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2676.669158][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2676.669160][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2676.669162][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2676.669164][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2676.669168][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2676.669169][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2676.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2676.669173][    C2] PKRU: 55555554
[ 2676.669174][    C2] Call Trace:
[ 2676.669177][    C2]  <TASK>
[ 2676.669179][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2676.669183][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2676.669187][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2676.669190][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2676.669195][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2676.669198][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2676.669201][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2676.669204][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2676.669209][ C2] xa_store (lib/xarray.c:1734) 
[ 2676.669213][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2676.669216][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2676.669221][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2676.669224][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2676.669227][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2676.669231][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2676.669234][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2676.669239][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2676.669243][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2676.669248][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2676.669252][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2676.669256][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2676.669262][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2676.669266][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2676.669271][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2676.669275][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2676.669278][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2676.669282][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2676.669285][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2676.669288][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2676.669293][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2676.669297][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2676.669302][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2676.669305][    C2] RIP: 0033:0x7f439756d93b
[ 2676.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2676.669311][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2676.669314][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2676.669316][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2676.669318][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2676.669320][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2676.669322][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2686.368564][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 2686.368846][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 2686.369087][    C1] NMI backtrace for cpu 1
| [ 2686.369098][    C1] Tainted: [L]=SOFTLOCKUP
[ 2686.369099][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2686.369101][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2686.369106][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2686.369110][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2686.369113][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2686.369115][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2686.369117][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2686.369119][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2686.369121][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2686.369123][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2686.369125][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2686.369129][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2686.369130][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2686.369132][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2686.369134][    C1] PKRU: 55555554
[ 2686.369135][    C1] Call Trace:
[ 2686.369136][    C1]  <TASK>
[ 2686.369138][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2686.369142][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2686.369146][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2686.369149][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2686.369154][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2686.369157][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2686.369159][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2686.369162][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2686.369167][ C1] xa_store (lib/xarray.c:1734) 
[ 2686.369171][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2686.369174][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2686.369178][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2686.369181][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2686.369184][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2686.369188][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2686.369191][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2686.369196][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2686.369200][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2686.369205][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2686.369209][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2686.369213][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2686.369219][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2686.369223][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2686.369227][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2686.369232][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2686.369235][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2686.369239][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2686.369241][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2686.369245][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2686.369250][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2686.369254][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2686.369258][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2686.369261][    C1] RIP: 0033:0x7f439756d93b
[ 2686.369264][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2686.369267][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2686.369269][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2686.369271][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2686.369273][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2686.369275][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2686.369277][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2686.369275][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 2686.369277][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2686.369282][    C1]  </TASK>
| [ 2686.370092][    C3] Tainted: [L]=SOFTLOCKUP
[ 2686.370094][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2686.370096][ C3] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 2686.370102][ C3] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 2686.370106][    C3] RSP: 0018:ffffc90000270a40 EFLAGS: 00000202
[ 2686.370109][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2686.370112][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2686.370114][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2686.370115][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2686.370117][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2686.370119][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2686.370122][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2686.370127][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2686.370129][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2686.370131][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2686.370133][    C3] PKRU: 55555554
[ 2686.370134][    C3] Call Trace:
[ 2686.370135][    C3]  <IRQ>
[ 2686.370137][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2686.370141][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2686.370145][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2686.370149][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2686.370152][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2686.370155][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2686.370160][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2686.370164][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2686.370167][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2686.370170][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2686.370174][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2686.370176][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2686.370179][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2686.370182][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2686.370187][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2686.370190][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2686.370193][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2686.370196][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2686.370202][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2686.370205][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2686.370211][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2686.370215][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2686.370220][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2686.370225][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2686.370228][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2686.370231][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2686.370234][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2686.370238][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2686.370240][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2686.370247][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2686.370250][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2686.370253][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2686.370257][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2686.370261][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2686.370264][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2686.370267][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2686.370270][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2686.370274][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2686.370278][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2686.370283][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2686.370285][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2686.370291][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2686.370295][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2686.370298][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2686.370303][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2686.370307][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2686.370312][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2686.370316][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2686.370319][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2686.370322][    C3]  </IRQ>
[ 2686.370323][    C3]  <TASK>
[ 2686.370325][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2686.370329][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2686.370332][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2686.370335][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2686.370337][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2686.370339][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2686.370341][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2686.370342][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2686.370344][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2686.370348][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2686.370353][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2686.370359][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2686.370362][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2686.370367][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2686.370370][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2686.370374][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2686.370377][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2686.370382][ C3] xas_alloc (lib/xarray.c:378) 
[ 2686.370386][ C3] xas_create (lib/xarray.c:685) 
[ 2686.370392][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2686.370397][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2686.370400][ C3] __xa_store (lib/xarray.c:1703) 
[ 2686.370404][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2686.370409][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2686.370412][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2686.370415][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2686.370420][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2686.370423][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2686.370426][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2686.370431][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2686.370434][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2686.370436][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2686.370440][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2686.370444][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2686.370448][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2686.370452][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2686.370457][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2686.370460][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2686.370465][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2686.370471][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2686.370475][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2686.370480][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2686.370485][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2686.370488][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2686.370492][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2686.370494][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2686.370498][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2686.370504][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2686.370508][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2686.370512][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2686.370515][    C3] RIP: 0033:0x7f439756d93b
[ 2686.370520][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2686.370522][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2686.370525][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2686.370527][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2686.370528][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2686.370530][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2686.370531][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2700.656122][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2700.656128][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2700.656132][ C0] softirqs last disabled at (0): 0x0 
| [ 2700.656140][    C0] Tainted: [L]=SOFTLOCKUP
[ 2700.656142][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2700.656144][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 2700.656149][ C0] Code: 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff <5b> b8 01 00 00 00 5d 41 5c c3 cc cc cc cc 41 bc 08 00 00 00 45 29
All code
========
   0:	00 74 f2 48          	add    %dh,0x48(%rdx,%rsi,8)
   4:	89 c2                	mov    %eax,%edx
   6:	b8 01 00 00 00       	mov    $0x1,%eax
   b:	48 85 d2             	test   %rdx,%rdx
   e:	0f 84 4c ff ff ff    	je     0xffffffffffffff60
  14:	41 83 e2 07          	and    $0x7,%r10d
  18:	49 39 d1             	cmp    %rdx,%r9
  1b:	0f 85 34 ff ff ff    	jne    0xffffffffffffff55
  21:	45 3a 11             	cmp    (%r9),%r10b
  24:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff55
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	b8 01 00 00 00       	mov    $0x1,%eax
  30:	5d                   	pop    %rbp
  31:	41 5c                	pop    %r12
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  3e:	45                   	rex.RB
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	b8 01 00 00 00       	mov    $0x1,%eax
   6:	5d                   	pop    %rbp
   7:	41 5c                	pop    %r12
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  14:	45                   	rex.RB
  15:	29                   	.byte 0x29
[ 2700.656153][    C0] RSP: 0018:ffffc900034c79f8 EFLAGS: 00000246
[ 2700.656155][    C0] RAX: fffffbfff77dcb81 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 2700.656157][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2700.656159][    C0] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2700.656161][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2700.656163][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2700.656165][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2700.656168][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2700.656171][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2700.656173][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2700.656174][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2700.656176][    C0] PKRU: 55555554
[ 2700.656177][    C0] Call Trace:
[ 2700.656179][    C0]  <TASK>
[ 2700.656182][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2700.656187][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2700.656190][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2700.656194][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2700.656197][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2700.656202][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2700.656205][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2700.656208][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2700.656210][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2700.656216][ C0] xa_store (lib/xarray.c:1734) 
[ 2700.656220][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2700.656223][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2700.656228][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2700.656231][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2700.656234][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2700.656238][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2700.656242][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2700.656248][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2700.656252][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2700.656256][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2700.656260][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2700.656265][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2700.656272][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2700.656275][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2700.656280][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2700.656284][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2700.656288][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2700.656292][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2700.656294][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2700.656298][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2700.656303][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2700.656308][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2700.656312][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2700.656315][    C0] RIP: 0033:0x7f439756d93b
[ 2700.656319][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2700.656321][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2700.656324][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2700.656326][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2700.656328][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2700.656330][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2700.656332][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2704.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2704.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2704.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 2704.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 2704.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2704.669141][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2704.669145][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2704.669149][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2704.669151][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2704.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2704.669155][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2704.669157][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2704.669160][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2704.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2704.669164][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2704.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2704.669169][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2704.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2704.669172][    C2] PKRU: 55555554
[ 2704.669173][    C2] Call Trace:
[ 2704.669176][    C2]  <TASK>
[ 2704.669178][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2704.669182][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2704.669186][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2704.669189][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2704.669194][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2704.669197][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2704.669200][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2704.669204][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2704.669209][ C2] xa_store (lib/xarray.c:1734) 
[ 2704.669213][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2704.669216][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2704.669221][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2704.669224][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2704.669227][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2704.669231][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2704.669235][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2704.669240][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2704.669244][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2704.669249][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2704.669253][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2704.669257][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2704.669264][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2704.669267][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2704.669272][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2704.669276][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2704.669279][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2704.669283][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2704.669286][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2704.669289][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2704.669295][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2704.669299][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2704.669303][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2704.669306][    C2] RIP: 0033:0x7f439756d93b
[ 2704.669310][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2704.669313][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2704.669316][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2704.669318][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2704.669319][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2704.669321][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2704.669323][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2712.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2712.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2712.669129][ C1] softirqs last disabled at (0): 0x0 
| [ 2712.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 2712.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2712.669141][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2712.669145][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2712.669148][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2712.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2712.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2712.669155][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2712.669157][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2712.669160][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2712.669162][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2712.669164][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2712.669168][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2712.669170][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2712.669171][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2712.669173][    C1] PKRU: 55555554
[ 2712.669174][    C1] Call Trace:
[ 2712.669176][    C1]  <TASK>
[ 2712.669178][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2712.669181][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2712.669185][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2712.669188][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2712.669193][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2712.669196][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2712.669199][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2712.669201][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2712.669207][ C1] xa_store (lib/xarray.c:1734) 
[ 2712.669210][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2712.669214][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2712.669219][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2712.669222][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2712.669224][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2712.669229][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2712.669232][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2712.669238][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2712.669242][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2712.669246][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2712.669250][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2712.669255][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2712.669261][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2712.669265][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2712.669269][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2712.669273][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2712.669277][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2712.669280][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2712.669283][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2712.669287][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2712.669292][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2712.669295][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2712.669300][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2712.669303][    C1] RIP: 0033:0x7f439756d93b
[ 2712.669306][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2712.669309][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2712.669311][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2712.669313][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2712.669315][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2712.669317][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2712.669319][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2712.670150][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2712.670158][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2712.670161][ C3] softirqs last disabled at (0): 0x0 
| [ 2712.670173][    C3] Tainted: [L]=SOFTLOCKUP
[ 2712.670175][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2712.670177][ C3] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2712.670186][ C3] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2712.670189][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2712.670192][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2712.670194][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2712.670196][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2712.670198][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2712.670200][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2712.670202][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2712.670205][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2712.670209][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2712.670211][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2712.670212][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2712.670214][    C3] PKRU: 55555554
[ 2712.670215][    C3] Call Trace:
[ 2712.670219][    C3]  <IRQ>
[ 2712.670221][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2712.670226][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2712.670232][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2712.670235][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2712.670240][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2712.670244][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2712.670247][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2712.670251][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2712.670255][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2712.670258][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2712.670261][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2712.670263][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2712.670266][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2712.670272][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2712.670277][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2712.670280][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2712.670283][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2712.670289][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2712.670293][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2712.670299][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2712.670303][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2712.670309][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2712.670315][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2712.670318][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2712.670321][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2712.670325][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2712.670328][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2712.670331][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2712.670337][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2712.670340][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2712.670343][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2712.670347][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2712.670352][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2712.670355][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2712.670358][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2712.670362][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2712.670366][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2712.670370][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2712.670374][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2712.670377][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2712.670383][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2712.670387][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2712.670390][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2712.670395][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2712.670400][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2712.670406][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2712.670410][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2712.670413][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2712.670417][    C3]  </IRQ>
[ 2712.670418][    C3]  <TASK>
[ 2712.670420][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2712.670426][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2712.670429][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2712.670432][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2712.670435][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2712.670437][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2712.670439][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2712.670441][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2712.670443][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2712.670447][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2712.670453][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2712.670459][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2712.670463][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2712.670468][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2712.670471][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2712.670475][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2712.670478][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2712.670483][ C3] xas_alloc (lib/xarray.c:378) 
[ 2712.670488][ C3] xas_create (lib/xarray.c:685) 
[ 2712.670494][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2712.670499][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2712.670503][ C3] __xa_store (lib/xarray.c:1703) 
[ 2712.670507][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2712.670512][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2712.670515][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2712.670518][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2712.670523][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2712.670527][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2712.670530][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2712.670535][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2712.670538][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2712.670541][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2712.670546][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2712.670549][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2712.670554][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2712.670558][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2712.670562][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2712.670566][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2712.670571][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2712.670579][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2712.670582][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2712.670588][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2712.670592][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2712.670596][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2712.670599][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2712.670602][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2712.670606][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2712.670612][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2712.670615][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2712.670621][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2712.670625][    C3] RIP: 0033:0x7f439756d93b
[ 2712.670629][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2712.670632][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2712.670635][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2712.670638][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2712.670640][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2712.670642][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2712.670644][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2728.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2728.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2728.656129][ C0] softirqs last disabled at (0): 0x0 
| [ 2728.656138][    C0] Tainted: [L]=SOFTLOCKUP
[ 2728.656139][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2728.656141][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2728.656146][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2728.656149][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2728.656152][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2728.656154][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2728.656156][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2728.656158][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2728.656160][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2728.656162][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2728.656164][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2728.656168][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2728.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2728.656171][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2728.656173][    C0] PKRU: 55555554
[ 2728.656174][    C0] Call Trace:
[ 2728.656176][    C0]  <TASK>
[ 2728.656178][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2728.656181][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2728.656185][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2728.656188][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2728.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2728.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2728.656199][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2728.656202][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2728.656207][ C0] xa_store (lib/xarray.c:1734) 
[ 2728.656211][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2728.656214][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2728.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2728.656222][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2728.656225][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2728.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2728.656232][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2728.656238][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2728.656242][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2728.656247][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2728.656251][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2728.656255][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2728.656261][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2728.656265][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2728.656270][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2728.656274][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2728.656277][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2728.656281][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2728.656284][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2728.656287][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2728.656293][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2728.656297][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2728.656301][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2728.656304][    C0] RIP: 0033:0x7f439756d93b
[ 2728.656307][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2728.656310][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2728.656313][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2728.656315][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2728.656317][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2728.656319][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2728.656321][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2732.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2732.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2732.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 2732.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 2732.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2732.669141][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2732.669146][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2732.669149][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2732.669151][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2732.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2732.669155][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2732.669157][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2732.669159][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2732.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2732.669164][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2732.669168][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2732.669170][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2732.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2732.669173][    C2] PKRU: 55555554
[ 2732.669174][    C2] Call Trace:
[ 2732.669176][    C2]  <TASK>
[ 2732.669179][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2732.669182][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2732.669186][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2732.669189][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2732.669194][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2732.669197][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2732.669200][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2732.669203][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2732.669208][ C2] xa_store (lib/xarray.c:1734) 
[ 2732.669212][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2732.669216][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2732.669221][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2732.669224][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2732.669226][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2732.669231][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2732.669234][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2732.669240][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2732.669244][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2732.669248][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2732.669252][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2732.669256][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2732.669263][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2732.669267][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2732.669271][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2732.669276][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2732.669279][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2732.669283][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2732.669286][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2732.669289][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2732.669294][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2732.669298][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2732.669303][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2732.669306][    C2] RIP: 0033:0x7f439756d93b
[ 2732.669310][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2732.669313][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2732.669315][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2732.669318][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2732.669320][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2732.669321][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2732.669323][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2740.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2740.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2740.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 2740.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 2740.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2740.669141][ C1] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2740.669145][ C1] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2740.669148][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2740.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2740.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2740.669155][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2740.669157][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2740.669159][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2740.669161][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2740.669163][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2740.669167][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2740.669168][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2740.669170][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2740.669172][    C1] PKRU: 55555554
[ 2740.669173][    C1] Call Trace:
[ 2740.669174][    C1]  <TASK>
[ 2740.669177][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2740.669180][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2740.669184][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2740.669187][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2740.669192][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2740.669195][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2740.669198][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2740.669200][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2740.669205][ C1] xa_store (lib/xarray.c:1734) 
[ 2740.669209][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2740.669213][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2740.669218][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2740.669221][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2740.669223][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2740.669228][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2740.669231][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2740.669236][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2740.669240][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2740.669245][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2740.669249][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2740.669253][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2740.669260][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2740.669264][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2740.669268][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2740.669273][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2740.669276][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2740.669279][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2740.669282][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2740.669286][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2740.669291][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2740.669295][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2740.669299][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2740.669302][    C1] RIP: 0033:0x7f439756d93b
[ 2740.669305][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2740.669308][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2740.669311][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2740.669313][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2740.669315][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2740.669316][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2740.669319][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2740.670151][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2740.670159][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2740.670163][ C3] softirqs last disabled at (0): 0x0 
| [ 2740.670175][    C3] Tainted: [L]=SOFTLOCKUP
[ 2740.670177][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2740.670179][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2740.670187][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2740.670190][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2740.670193][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2740.670195][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2740.670197][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2740.670199][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2740.670201][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2740.670203][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2740.670206][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2740.670210][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2740.670212][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2740.670213][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2740.670215][    C3] PKRU: 55555554
[ 2740.670217][    C3] Call Trace:
[ 2740.670221][    C3]  <IRQ>
[ 2740.670222][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2740.670229][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2740.670234][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2740.670237][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2740.670243][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2740.670247][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2740.670250][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2740.670254][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2740.670258][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2740.670261][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2740.670264][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2740.670267][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2740.670270][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2740.670276][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2740.670280][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2740.670283][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2740.670287][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2740.670293][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2740.670297][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2740.670303][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2740.670307][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2740.670314][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2740.670320][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2740.670323][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2740.670327][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2740.670330][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2740.670333][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2740.670336][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2740.670342][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2740.670345][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2740.670348][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2740.670352][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2740.670357][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2740.670360][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2740.670363][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2740.670367][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2740.670370][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2740.670375][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2740.670380][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2740.670382][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2740.670388][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2740.670392][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2740.670395][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2740.670400][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2740.670405][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2740.670411][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2740.670414][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2740.670418][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2740.670422][    C3]  </IRQ>
[ 2740.670424][    C3]  <TASK>
[ 2740.670425][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2740.670431][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2740.670434][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2740.670437][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2740.670440][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2740.670442][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2740.670444][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2740.670446][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2740.670448][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2740.670452][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2740.670457][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2740.670463][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2740.670467][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2740.670471][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2740.670474][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2740.670478][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2740.670481][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2740.670486][ C3] xas_alloc (lib/xarray.c:378) 
[ 2740.670491][ C3] xas_create (lib/xarray.c:685) 
[ 2740.670497][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2740.670501][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2740.670505][ C3] __xa_store (lib/xarray.c:1703) 
[ 2740.670509][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2740.670514][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2740.670516][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2740.670519][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2740.670524][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2740.670528][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2740.670531][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2740.670536][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2740.670539][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2740.670542][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2740.670546][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2740.670549][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2740.670554][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2740.670558][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2740.670563][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2740.670566][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2740.670571][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2740.670579][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2740.670583][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2740.670589][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2740.670593][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2740.670596][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2740.670600][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2740.670603][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2740.670606][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2740.670612][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2740.670617][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2740.670621][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2740.670625][    C3] RIP: 0033:0x7f439756d93b
[ 2740.670629][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2740.670632][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2740.670634][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2740.670636][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2740.670638][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2740.670640][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2740.670642][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2756.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2756.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2756.656127][ C0] softirqs last disabled at (0): 0x0 
| [ 2756.656136][    C0] Tainted: [L]=SOFTLOCKUP
[ 2756.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2756.656139][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2756.656144][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2756.656147][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2756.656149][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2756.656151][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2756.656153][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2756.656155][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2756.656157][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2756.656159][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2756.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2756.656165][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2756.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2756.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2756.656170][    C0] PKRU: 55555554
[ 2756.656171][    C0] Call Trace:
[ 2756.656173][    C0]  <TASK>
[ 2756.656175][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2756.656179][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2756.656183][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2756.656186][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2756.656192][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2756.656195][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2756.656198][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2756.656200][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2756.656206][ C0] xa_store (lib/xarray.c:1734) 
[ 2756.656210][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2756.656213][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2756.656218][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2756.656221][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2756.656223][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2756.656228][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2756.656231][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2756.656237][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2756.656241][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2756.656245][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2756.656249][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2756.656254][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2756.656260][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2756.656264][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2756.656268][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2756.656272][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2756.656276][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2756.656280][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2756.656282][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2756.656286][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2756.656291][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2756.656295][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2756.656299][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2756.656302][    C0] RIP: 0033:0x7f439756d93b
[ 2756.656306][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2756.656309][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2756.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2756.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2756.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2756.656317][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2756.656319][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2760.669121][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2760.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2760.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 2760.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 2760.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2760.669141][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2760.669145][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2760.669148][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2760.669151][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2760.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2760.669155][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2760.669158][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2760.669160][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2760.669162][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2760.669164][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2760.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2760.669169][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2760.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2760.669172][    C2] PKRU: 55555554
[ 2760.669174][    C2] Call Trace:
[ 2760.669175][    C2]  <TASK>
[ 2760.669178][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2760.669181][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2760.669185][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2760.669188][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2760.669193][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2760.669196][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2760.669199][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2760.669202][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2760.669207][ C2] xa_store (lib/xarray.c:1734) 
[ 2760.669211][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2760.669215][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2760.669220][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2760.669222][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2760.669225][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2760.669230][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2760.669233][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2760.669238][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2760.669242][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2760.669247][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2760.669250][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2760.669255][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2760.669261][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2760.669265][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2760.669269][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2760.669274][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2760.669277][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2760.669281][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2760.669283][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2760.669287][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2760.669292][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2760.669296][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2760.669300][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2760.669303][    C2] RIP: 0033:0x7f439756d93b
[ 2760.669307][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2760.669310][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2760.669312][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2760.669315][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2760.669317][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2760.669318][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2760.669320][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2764.382821][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 2764.383097][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 2764.383344][    C1] NMI backtrace for cpu 1
| [ 2764.383354][    C1] Tainted: [L]=SOFTLOCKUP
[ 2764.383356][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2764.383358][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2764.383363][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2764.383367][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2764.383370][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2764.383372][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2764.383374][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2764.383376][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2764.383378][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2764.383380][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2764.383382][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2764.383385][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2764.383387][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2764.383388][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2764.383390][    C1] PKRU: 55555554
[ 2764.383391][    C1] Call Trace:
[ 2764.383393][    C1]  <TASK>
[ 2764.383395][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2764.383399][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2764.383403][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2764.383406][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2764.383411][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2764.383414][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2764.383416][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2764.383419][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2764.383425][ C1] xa_store (lib/xarray.c:1734) 
[ 2764.383429][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2764.383432][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2764.383437][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2764.383439][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2764.383442][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2764.383446][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2764.383450][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2764.383455][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2764.383459][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2764.383463][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2764.383467][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2764.383471][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2764.383478][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2764.383482][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2764.383486][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2764.383490][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2764.383494][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2764.383497][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2764.383500][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2764.383504][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2764.383509][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2764.383512][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2764.383516][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2764.383520][    C1] RIP: 0033:0x7f439756d93b
[ 2764.383523][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2764.383525][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2764.383528][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2764.383530][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2764.383532][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2764.383534][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2764.383536][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2764.383534][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 2764.383536][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2764.383542][    C1]  </TASK>
| [ 2764.384348][    C3] Tainted: [L]=SOFTLOCKUP
[ 2764.384350][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2764.384352][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2764.384357][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2764.384361][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2764.384365][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2764.384367][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2764.384369][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2764.384371][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2764.384373][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2764.384375][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2764.384378][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2764.384382][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2764.384385][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2764.384387][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2764.384388][    C3] PKRU: 55555554
[ 2764.384390][    C3] Call Trace:
[ 2764.384391][    C3]  <IRQ>
[ 2764.384393][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2764.384398][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2764.384402][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2764.384406][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2764.384409][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2764.384414][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2764.384417][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2764.384421][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2764.384424][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2764.384428][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2764.384430][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2764.384433][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2764.384436][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2764.384441][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2764.384444][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2764.384447][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2764.384450][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2764.384456][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2764.384459][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2764.384465][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2764.384468][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2764.384475][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2764.384480][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2764.384483][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2764.384486][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2764.384489][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2764.384493][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2764.384495][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2764.384501][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2764.384503][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2764.384506][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2764.384511][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2764.384515][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2764.384518][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2764.384521][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2764.384524][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2764.384527][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2764.384532][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2764.384536][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2764.384539][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2764.384544][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2764.384547][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2764.384551][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2764.384556][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2764.384560][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2764.384565][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2764.384569][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2764.384572][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2764.384576][    C3]  </IRQ>
[ 2764.384577][    C3]  <TASK>
[ 2764.384579][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2764.384582][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2764.384585][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2764.384588][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2764.384590][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2764.384592][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2764.384593][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2764.384595][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2764.384597][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2764.384601][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2764.384606][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2764.384611][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2764.384615][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2764.384619][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2764.384622][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2764.384626][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2764.384628][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2764.384633][ C3] xas_alloc (lib/xarray.c:378) 
[ 2764.384638][ C3] xas_create (lib/xarray.c:685) 
[ 2764.384643][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2764.384647][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2764.384651][ C3] __xa_store (lib/xarray.c:1703) 
[ 2764.384655][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2764.384660][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2764.384662][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2764.384665][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2764.384670][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2764.384674][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2764.384677][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2764.384681][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2764.384684][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2764.384687][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2764.384691][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2764.384694][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2764.384699][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2764.384702][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2764.384707][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2764.384711][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2764.384715][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2764.384721][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2764.384725][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2764.384730][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2764.384735][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2764.384739][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2764.384742][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2764.384745][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2764.384749][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2764.384755][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2764.384759][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2764.384763][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2764.384766][    C3] RIP: 0033:0x7f439756d93b
[ 2764.384770][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2764.384773][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2764.384776][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2764.384777][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2764.384779][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2764.384780][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2764.384782][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2784.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2784.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2784.656127][ C0] softirqs last disabled at (0): 0x0 
| [ 2784.656136][    C0] Tainted: [L]=SOFTLOCKUP
[ 2784.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2784.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2784.656144][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2784.656147][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2784.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2784.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2784.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2784.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2784.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2784.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2784.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2784.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2784.656168][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2784.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2784.656171][    C0] PKRU: 55555554
[ 2784.656172][    C0] Call Trace:
[ 2784.656174][    C0]  <TASK>
[ 2784.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2784.656180][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2784.656184][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2784.656187][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2784.656192][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2784.656195][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2784.656197][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2784.656200][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2784.656206][ C0] xa_store (lib/xarray.c:1734) 
[ 2784.656210][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2784.656213][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2784.656218][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2784.656221][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2784.656224][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2784.656228][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2784.656231][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2784.656237][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2784.656241][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2784.656245][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2784.656249][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2784.656253][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2784.656260][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2784.656264][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2784.656268][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2784.656272][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2784.656276][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2784.656279][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2784.656282][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2784.656286][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2784.656291][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2784.656295][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2784.656300][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2784.656303][    C0] RIP: 0033:0x7f439756d93b
[ 2784.656306][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2784.656309][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2784.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2784.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2784.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2784.656318][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2784.656320][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2788.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2788.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2788.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 2788.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 2788.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2788.669141][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2788.669146][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2788.669149][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2788.669151][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2788.669154][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2788.669156][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2788.669158][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2788.669160][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2788.669162][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2788.669165][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2788.669168][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2788.669170][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2788.669172][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2788.669173][    C2] PKRU: 55555554
[ 2788.669175][    C2] Call Trace:
[ 2788.669177][    C2]  <TASK>
[ 2788.669179][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2788.669183][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2788.669186][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2788.669189][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2788.669194][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2788.669197][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2788.669200][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2788.669203][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2788.669208][ C2] xa_store (lib/xarray.c:1734) 
[ 2788.669212][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2788.669215][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2788.669220][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2788.669223][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2788.669226][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2788.669230][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2788.669234][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2788.669239][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2788.669242][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2788.669247][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2788.669251][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2788.669255][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2788.669262][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2788.669265][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2788.669270][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2788.669274][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2788.669278][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2788.669281][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2788.669284][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2788.669288][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2788.669293][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2788.669297][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2788.669301][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2788.669304][    C2] RIP: 0033:0x7f439756d93b
[ 2788.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2788.669311][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2788.669314][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2788.669316][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2788.669318][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2788.669320][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2788.669321][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2788.669348][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2788.669353][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2788.669356][ C1] softirqs last disabled at (0): 0x0 
| [ 2788.669365][    C1] Tainted: [L]=SOFTLOCKUP
[ 2788.669367][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2788.669369][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2788.669373][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2788.669376][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2788.669379][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2788.669381][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2788.669383][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2788.669385][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2788.669387][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2788.669389][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2788.669391][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2788.669395][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2788.669397][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2788.669398][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2788.669400][    C1] PKRU: 55555554
[ 2788.669401][    C1] Call Trace:
[ 2788.669402][    C1]  <TASK>
[ 2788.669404][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2788.669408][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2788.669412][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2788.669415][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2788.669420][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2788.669423][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2788.669426][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2788.669428][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2788.669433][ C1] xa_store (lib/xarray.c:1734) 
[ 2788.669437][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2788.669440][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2788.669445][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2788.669448][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2788.669451][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2788.669456][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2788.669459][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2788.669464][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2788.669468][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2788.669473][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2788.669477][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2788.669481][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2788.669487][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2788.669491][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2788.669495][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2788.669499][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2788.669503][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2788.669507][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2788.669509][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2788.669512][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2788.669518][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2788.669522][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2788.669526][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2788.669529][    C1] RIP: 0033:0x7f439756d93b
[ 2788.669532][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2788.669534][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2788.669537][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2788.669540][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2788.669541][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2788.669543][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2788.669545][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2788.670151][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2788.670159][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2788.670163][ C3] softirqs last disabled at (0): 0x0 
| [ 2788.670175][    C3] Tainted: [L]=SOFTLOCKUP
[ 2788.670177][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2788.670179][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2788.670187][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2788.670190][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2788.670194][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2788.670196][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2788.670198][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2788.670200][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2788.670202][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2788.670205][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2788.670207][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2788.670212][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2788.670214][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2788.670216][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2788.670218][    C3] PKRU: 55555554
[ 2788.670219][    C3] Call Trace:
[ 2788.670223][    C3]  <IRQ>
[ 2788.670225][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2788.670231][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2788.670236][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2788.670239][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2788.670244][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2788.670248][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2788.670252][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2788.670256][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2788.670259][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2788.670262][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2788.670265][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2788.670268][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2788.670271][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2788.670277][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2788.670282][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2788.670284][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2788.670288][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2788.670294][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2788.670298][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2788.670303][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2788.670308][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2788.670314][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2788.670320][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2788.670323][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2788.670326][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2788.670330][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2788.670334][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2788.670337][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2788.670342][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2788.670345][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2788.670349][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2788.670353][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2788.670358][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2788.670361][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2788.670364][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2788.670368][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2788.670371][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2788.670376][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2788.670381][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2788.670384][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2788.670390][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2788.670394][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2788.670398][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2788.670403][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2788.670407][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2788.670414][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2788.670417][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2788.670420][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2788.670425][    C3]  </IRQ>
[ 2788.670426][    C3]  <TASK>
[ 2788.670427][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2788.670433][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2788.670436][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2788.670438][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2788.670442][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2788.670444][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2788.670446][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2788.670448][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2788.670450][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2788.670454][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2788.670460][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2788.670466][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2788.670470][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2788.670474][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2788.670477][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2788.670481][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2788.670484][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2788.670489][ C3] xas_alloc (lib/xarray.c:378) 
[ 2788.670494][ C3] xas_create (lib/xarray.c:685) 
[ 2788.670500][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2788.670504][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2788.670508][ C3] __xa_store (lib/xarray.c:1703) 
[ 2788.670512][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2788.670517][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2788.670520][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2788.670523][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2788.670528][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2788.670532][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2788.670536][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2788.670541][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2788.670544][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2788.670547][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2788.670551][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2788.670554][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2788.670559][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2788.670563][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2788.670568][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2788.670572][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2788.670577][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2788.670585][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2788.670589][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2788.670595][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2788.670599][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2788.670602][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2788.670606][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2788.670609][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2788.670612][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2788.670619][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2788.670623][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2788.670628][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2788.670631][    C3] RIP: 0033:0x7f439756d93b
[ 2788.670635][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2788.670637][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2788.670640][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2788.670642][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2788.670644][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2788.670646][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2788.670648][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2812.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2812.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2812.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 2812.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 2812.656139][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2812.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2812.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2812.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2812.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2812.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2812.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2812.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2812.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2812.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2812.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2812.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2812.656168][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2812.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2812.656172][    C0] PKRU: 55555554
[ 2812.656173][    C0] Call Trace:
[ 2812.656175][    C0]  <TASK>
[ 2812.656178][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2812.656181][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2812.656185][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2812.656188][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2812.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2812.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2812.656199][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2812.656202][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2812.656208][ C0] xa_store (lib/xarray.c:1734) 
[ 2812.656211][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2812.656215][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2812.656220][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2812.656223][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2812.656226][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2812.656230][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2812.656234][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2812.656239][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2812.656243][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2812.656247][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2812.656251][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2812.656256][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2812.656262][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2812.656265][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2812.656270][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2812.656274][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2812.656277][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2812.656281][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2812.656284][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2812.656288][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2812.656293][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2812.656297][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2812.656301][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2812.656305][    C0] RIP: 0033:0x7f439756d93b
[ 2812.656307][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2812.656310][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2812.656313][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2812.656315][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2812.656317][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2812.656319][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2812.656321][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2816.669130][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2816.669137][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2816.669140][ C2] softirqs last disabled at (0): 0x0 
| [ 2816.669152][    C2] Tainted: [L]=SOFTLOCKUP
[ 2816.669154][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2816.669156][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2816.669164][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2816.669168][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2816.669171][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2816.669173][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2816.669175][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2816.669177][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2816.669179][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2816.669181][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2816.669183][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2816.669188][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2816.669190][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2816.669191][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2816.669193][    C2] PKRU: 55555554
[ 2816.669194][    C2] Call Trace:
[ 2816.669198][    C2]  <TASK>
[ 2816.669201][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2816.669205][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2816.669209][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2816.669213][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2816.669219][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2816.669223][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2816.669226][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2816.669229][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2816.669235][ C2] xa_store (lib/xarray.c:1734) 
[ 2816.669239][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2816.669244][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2816.669248][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2816.669251][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2816.669254][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2816.669259][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2816.669263][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2816.669269][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2816.669273][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2816.669278][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2816.669283][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2816.669288][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2816.669295][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2816.669300][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2816.669305][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2816.669310][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2816.669314][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2816.669319][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2816.669322][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2816.669326][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2816.669331][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2816.669335][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2816.669340][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2816.669344][    C2] RIP: 0033:0x7f439756d93b
[ 2816.669349][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2816.669352][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2816.669355][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2816.669357][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2816.669359][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2816.669361][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2816.669362][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2816.669391][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2816.669397][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2816.669400][ C1] softirqs last disabled at (0): 0x0 
| [ 2816.669409][    C1] Tainted: [L]=SOFTLOCKUP
[ 2816.669410][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2816.669412][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2816.669417][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2816.669421][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2816.669423][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2816.669425][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2816.669427][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2816.669429][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2816.669432][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2816.669434][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2816.669436][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2816.669440][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2816.669442][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2816.669443][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2816.669445][    C1] PKRU: 55555554
[ 2816.669446][    C1] Call Trace:
[ 2816.669448][    C1]  <TASK>
[ 2816.669450][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2816.669454][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2816.669458][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2816.669462][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2816.669467][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2816.669470][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2816.669473][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2816.669476][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2816.669481][ C1] xa_store (lib/xarray.c:1734) 
[ 2816.669486][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2816.669489][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2816.669494][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2816.669496][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2816.669499][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2816.669504][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2816.669507][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2816.669513][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2816.669517][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2816.669521][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2816.669525][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2816.669530][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2816.669536][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2816.669540][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2816.669545][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2816.669549][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2816.669553][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2816.669557][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2816.669559][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2816.669563][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2816.669568][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2816.669572][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2816.669577][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2816.669580][    C1] RIP: 0033:0x7f439756d93b
[ 2816.669583][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2816.669586][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2816.669588][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2816.669591][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2816.669593][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2816.669594][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2816.669596][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2816.670135][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2816.670143][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2816.670147][ C3] softirqs last disabled at (0): 0x0 
| [ 2816.670158][    C3] Tainted: [L]=SOFTLOCKUP
[ 2816.670160][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2816.670163][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2816.670171][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2816.670175][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2816.670178][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2816.670180][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2816.670182][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2816.670184][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2816.670186][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2816.670188][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2816.670191][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2816.670195][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2816.670197][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2816.670199][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2816.670201][    C3] PKRU: 55555554
[ 2816.670202][    C3] Call Trace:
[ 2816.670206][    C3]  <IRQ>
[ 2816.670208][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2816.670214][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2816.670219][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2816.670222][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2816.670227][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2816.670232][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2816.670235][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2816.670240][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2816.670243][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2816.670247][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2816.670249][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2816.670252][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2816.670255][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2816.670260][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2816.670265][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2816.670268][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2816.670272][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2816.670277][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2816.670281][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2816.670286][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2816.670291][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2816.670297][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2816.670303][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2816.670306][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2816.670309][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2816.670313][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2816.670316][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2816.670319][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2816.670326][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2816.670329][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2816.670332][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2816.670336][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2816.670341][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2816.670345][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2816.670348][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2816.670351][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2816.670355][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2816.670359][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2816.670364][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2816.670366][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2816.670372][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2816.670376][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2816.670379][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2816.670384][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2816.670388][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2816.670395][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2816.670399][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2816.670402][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2816.670406][    C3]  </IRQ>
[ 2816.670407][    C3]  <TASK>
[ 2816.670409][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2816.670414][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2816.670417][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2816.670420][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2816.670423][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2816.670425][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2816.670427][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2816.670429][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2816.670431][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2816.670435][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2816.670441][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2816.670447][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2816.670451][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2816.670456][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2816.670459][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2816.670463][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2816.670466][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2816.670471][ C3] xas_alloc (lib/xarray.c:378) 
[ 2816.670476][ C3] xas_create (lib/xarray.c:685) 
[ 2816.670482][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2816.670487][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2816.670490][ C3] __xa_store (lib/xarray.c:1703) 
[ 2816.670494][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2816.670499][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2816.670502][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2816.670505][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2816.670510][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2816.670514][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2816.670517][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2816.670522][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2816.670526][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2816.670528][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2816.670532][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2816.670535][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2816.670540][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2816.670544][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2816.670549][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2816.670553][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2816.670557][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2816.670565][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2816.670568][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2816.670574][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2816.670578][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2816.670581][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2816.670585][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2816.670587][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2816.670591][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2816.670597][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2816.670600][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2816.670606][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2816.670609][    C3] RIP: 0033:0x7f439756d93b
[ 2816.670613][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2816.670615][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2816.670618][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2816.670620][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2816.670622][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2816.670624][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2816.670625][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2840.656123][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2840.656129][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2840.656132][ C0] softirqs last disabled at (0): 0x0 
| [ 2840.656142][    C0] Tainted: [L]=SOFTLOCKUP
[ 2840.656143][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2840.656145][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2840.656150][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2840.656153][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2840.656156][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2840.656158][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2840.656160][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2840.656162][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2840.656164][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2840.656166][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2840.656169][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2840.656172][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2840.656174][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2840.656176][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2840.656177][    C0] PKRU: 55555554
[ 2840.656179][    C0] Call Trace:
[ 2840.656181][    C0]  <TASK>
[ 2840.656183][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2840.656187][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2840.656190][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2840.656194][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2840.656200][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2840.656203][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2840.656206][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2840.656209][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2840.656214][ C0] xa_store (lib/xarray.c:1734) 
[ 2840.656218][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2840.656222][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2840.656228][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2840.656230][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2840.656233][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2840.656238][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2840.656242][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2840.656247][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2840.656251][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2840.656256][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2840.656260][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2840.656264][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2840.656271][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2840.656275][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2840.656280][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2840.656284][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2840.656288][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2840.656292][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2840.656294][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2840.656298][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2840.656303][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2840.656307][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2840.656312][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2840.656315][    C0] RIP: 0033:0x7f439756d93b
[ 2840.656318][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2840.656321][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2840.656324][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2840.656326][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2840.656328][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2840.656330][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2840.656332][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2842.396791][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 2842.397067][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 2842.397306][    C1] NMI backtrace for cpu 1
| [ 2842.397316][    C1] Tainted: [L]=SOFTLOCKUP
[ 2842.397318][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2842.397319][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2842.397325][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2842.397328][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2842.397331][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2842.397333][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2842.397335][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2842.397337][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2842.397339][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2842.397341][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2842.397343][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2842.397346][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2842.397348][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2842.397349][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2842.397351][    C1] PKRU: 55555554
[ 2842.397352][    C1] Call Trace:
[ 2842.397353][    C1]  <TASK>
[ 2842.397355][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2842.397359][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2842.397362][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2842.397365][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2842.397370][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2842.397373][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2842.397376][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2842.397379][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2842.397384][ C1] xa_store (lib/xarray.c:1734) 
[ 2842.397387][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2842.397390][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2842.397395][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2842.397398][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2842.397400][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2842.397404][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2842.397408][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2842.397413][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2842.397417][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2842.397423][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2842.397427][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2842.397431][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2842.397437][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2842.397441][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2842.397445][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2842.397450][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2842.397453][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2842.397457][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2842.397459][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2842.397463][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2842.397468][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2842.397472][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2842.397476][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2842.397479][    C1] RIP: 0033:0x7f439756d93b
[ 2842.397482][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2842.397485][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2842.397488][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2842.397490][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2842.397492][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2842.397493][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2842.397496][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2842.397493][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 2842.397496][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2842.397501][    C1]  </TASK>
| [ 2842.398311][    C3] Tainted: [L]=SOFTLOCKUP
[ 2842.398313][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2842.398315][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2842.398320][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2842.398323][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2842.398326][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2842.398329][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2842.398331][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2842.398333][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2842.398334][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2842.398336][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2842.398339][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2842.398342][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2842.398344][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2842.398346][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2842.398348][    C3] PKRU: 55555554
[ 2842.398349][    C3] Call Trace:
[ 2842.398350][    C3]  <IRQ>
[ 2842.398352][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2842.398357][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2842.398361][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2842.398364][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2842.398367][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2842.398372][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2842.398375][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2842.398379][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2842.398383][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2842.398386][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2842.398389][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2842.398391][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2842.398394][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2842.398399][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2842.398403][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2842.398406][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2842.398409][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2842.398414][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2842.398418][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2842.398423][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2842.398426][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2842.398433][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2842.398437][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2842.398440][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2842.398443][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2842.398447][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2842.398450][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2842.398452][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2842.398458][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2842.398461][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2842.398464][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2842.398469][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2842.398473][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2842.398476][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2842.398479][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2842.398483][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2842.398486][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2842.398490][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2842.398495][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2842.398497][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2842.398502][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2842.398506][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2842.398509][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2842.398515][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2842.398519][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2842.398524][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2842.398527][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2842.398531][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2842.398534][    C3]  </IRQ>
[ 2842.398535][    C3]  <TASK>
[ 2842.398537][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2842.398540][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2842.398543][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2842.398546][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2842.398548][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2842.398551][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2842.398552][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2842.398554][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2842.398556][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2842.398560][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2842.398566][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2842.398571][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2842.398575][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2842.398579][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2842.398582][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2842.398586][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2842.398589][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2842.398594][ C3] xas_alloc (lib/xarray.c:378) 
[ 2842.398598][ C3] xas_create (lib/xarray.c:685) 
[ 2842.398604][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2842.398608][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2842.398612][ C3] __xa_store (lib/xarray.c:1703) 
[ 2842.398616][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2842.398620][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2842.398623][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2842.398626][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2842.398631][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2842.398635][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2842.398638][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2842.398643][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2842.398645][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2842.398648][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2842.398652][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2842.398655][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2842.398660][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2842.398664][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2842.398668][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2842.398672][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2842.398676][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2842.398683][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2842.398686][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2842.398691][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2842.398696][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2842.398699][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2842.398703][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2842.398706][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2842.398709][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2842.398715][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2842.398719][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2842.398723][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2842.398726][    C3] RIP: 0033:0x7f439756d93b
[ 2842.398731][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2842.398733][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2842.398736][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2842.398738][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2842.398739][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2842.398741][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2842.398743][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2844.669121][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2844.669126][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2844.669130][ C2] softirqs last disabled at (0): 0x0 
| [ 2844.669140][    C2] Tainted: [L]=SOFTLOCKUP
[ 2844.669141][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2844.669143][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2844.669148][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2844.669152][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2844.669154][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2844.669156][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2844.669158][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2844.669160][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2844.669162][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2844.669164][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2844.669166][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2844.669171][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2844.669173][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2844.669174][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2844.669176][    C2] PKRU: 55555554
[ 2844.669177][    C2] Call Trace:
[ 2844.669179][    C2]  <TASK>
[ 2844.669182][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2844.669186][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2844.669190][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2844.669193][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2844.669198][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2844.669202][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2844.669204][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2844.669207][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2844.669213][ C2] xa_store (lib/xarray.c:1734) 
[ 2844.669217][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2844.669220][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2844.669225][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2844.669228][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2844.669231][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2844.669235][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2844.669239][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2844.669244][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2844.669248][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2844.669253][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2844.669257][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2844.669261][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2844.669267][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2844.669271][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2844.669275][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2844.669279][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2844.669283][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2844.669286][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2844.669289][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2844.669293][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2844.669298][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2844.669302][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2844.669307][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2844.669310][    C2] RIP: 0033:0x7f439756d93b
[ 2844.669313][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2844.669316][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2844.669319][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2844.669321][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2844.669323][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2844.669325][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2844.669327][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2868.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2868.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2868.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 2868.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 2868.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2868.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2868.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2868.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2868.656151][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2868.656153][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2868.656155][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2868.656157][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2868.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2868.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2868.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2868.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2868.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2868.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2868.656172][    C0] PKRU: 55555554
[ 2868.656174][    C0] Call Trace:
[ 2868.656176][    C0]  <TASK>
[ 2868.656178][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2868.656182][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2868.656186][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2868.656189][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2868.656194][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2868.656197][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2868.656200][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2868.656202][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2868.656208][ C0] xa_store (lib/xarray.c:1734) 
[ 2868.656212][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2868.656215][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2868.656220][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2868.656223][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2868.656226][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2868.656230][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2868.656234][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2868.656239][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2868.656243][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2868.656247][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2868.656251][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2868.656256][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2868.656262][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2868.656266][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2868.656270][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2868.656274][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2868.656278][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2868.656281][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2868.656284][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2868.656288][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2868.656293][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2868.656297][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2868.656301][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2868.656304][    C0] RIP: 0033:0x7f439756d93b
[ 2868.656307][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2868.656310][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2868.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2868.656315][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2868.656317][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2868.656319][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2868.656321][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2868.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2868.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2868.669129][ C1] softirqs last disabled at (0): 0x0 
| [ 2868.669138][    C1] Tainted: [L]=SOFTLOCKUP
[ 2868.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2868.669141][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 2868.669146][ C1] Code: 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 <48> 01 f0 55 53 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe
All code
========
   0:	0f 1f 40 00          	nopl   0x0(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	48 85 f6             	test   %rsi,%rsi
  1b:	0f 84 5e 01 00 00    	je     0x17f
  21:	48 89 f8             	mov    %rdi,%rax
  24:	41 54                	push   %r12
  26:	44 0f b6 c2          	movzbl %dl,%r8d
  2a:*	48 01 f0             	add    %rsi,%rax		<-- trapping instruction
  2d:	55                   	push   %rbp
  2e:	53                   	push   %rbx
  2f:	72 14                	jb     0x45
  31:	eb 26                	jmp    0x59
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  3d:	ff ff fe 

Code starting with the faulting instruction
===========================================
   0:	48 01 f0             	add    %rsi,%rax
   3:	55                   	push   %rbp
   4:	53                   	push   %rbx
   5:	72 14                	jb     0x1b
   7:	eb 26                	jmp    0x2f
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  13:	ff ff fe 
[ 2868.669149][    C1] RSP: 0018:ffffc900034b7a08 EFLAGS: 00000202
[ 2868.669152][    C1] RAX: ffffffffbbee5c00 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2868.669154][    C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2868.669156][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2868.669158][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2868.669160][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2868.669162][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2868.669165][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2868.669168][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2868.669170][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2868.669171][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2868.669173][    C1] PKRU: 55555554
[ 2868.669174][    C1] Call Trace:
[ 2868.669176][    C1]  <TASK>
[ 2868.669177][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2868.669182][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2868.669185][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2868.669189][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2868.669192][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2868.669197][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2868.669200][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2868.669202][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2868.669205][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2868.669210][ C1] xa_store (lib/xarray.c:1734) 
[ 2868.669214][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2868.669217][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2868.669222][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2868.669225][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2868.669228][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2868.669233][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2868.669236][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2868.669241][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2868.669245][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2868.669250][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2868.669254][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2868.669258][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2868.669265][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2868.669269][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2868.669273][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2868.669277][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2868.669281][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2868.669284][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2868.669287][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2868.669291][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2868.669296][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2868.669300][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2868.669304][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2868.669307][    C1] RIP: 0033:0x7f439756d93b
[ 2868.669310][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2868.669313][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2868.669316][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2868.669317][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2868.669319][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2868.669321][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2868.669323][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2868.670136][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2868.670144][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2868.670148][ C3] softirqs last disabled at (0): 0x0 
| [ 2868.670159][    C3] Tainted: [L]=SOFTLOCKUP
[ 2868.670160][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2868.670163][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:177 mm/kasan/generic.c:189) 
[ 2868.670169][ C3] Code: ff ff ff ff ff ff fe 48 39 c7 77 23 44 89 c2 e8 b7 e7 ff ff 83 f0 01 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff <48> 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	ff                   	(bad)
   3:	ff                   	(bad)
   4:	ff                   	(bad)
   5:	ff                   	(bad)
   6:	fe 48 39             	decb   0x39(%rax)
   9:	c7                   	(bad)
   a:	77 23                	ja     0x2f
   c:	44 89 c2             	mov    %r8d,%edx
   f:	e8 b7 e7 ff ff       	call   0xffffffffffffe7cb
  14:	83 f0 01             	xor    $0x1,%eax
  17:	5b                   	pop    %rbx
  18:	5d                   	pop    %rbp
  19:	41 5c                	pop    %r12
  1b:	c3                   	ret
  1c:	cc                   	int3
  1d:	cc                   	int3
  1e:	cc                   	int3
  1f:	cc                   	int3
  20:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  27:	7f ff ff 
  2a:*	48 39 c7             	cmp    %rax,%rdi		<-- trapping instruction
  2d:	76 dd                	jbe    0xc
  2f:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  34:	48 89 fd             	mov    %rdi,%rbp
  37:	48                   	rex.W
  38:	b8 00 00 00 00       	mov    $0x0,%eax
  3d:	00 fc                	add    %bh,%ah
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	48 39 c7             	cmp    %rax,%rdi
   3:	76 dd                	jbe    0xffffffffffffffe2
   5:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   a:	48 89 fd             	mov    %rdi,%rbp
   d:	48                   	rex.W
   e:	b8 00 00 00 00       	mov    $0x0,%eax
  13:	00 fc                	add    %bh,%ah
  15:	ff                   	.byte 0xff
[ 2868.670173][    C3] RSP: 0018:ffffc90000270a28 EFLAGS: 00000282
[ 2868.670176][    C3] RAX: ffff7fffffffffff RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2868.670178][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2868.670180][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2868.670182][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2868.670184][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2868.670186][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2868.670189][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2868.670193][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2868.670195][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2868.670197][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2868.670198][    C3] PKRU: 55555554
[ 2868.670200][    C3] Call Trace:
[ 2868.670204][    C3]  <IRQ>
[ 2868.670207][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2868.670214][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2868.670218][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2868.670223][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2868.670226][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2868.670231][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2868.670235][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2868.670239][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2868.670243][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2868.670246][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2868.670249][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2868.670252][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2868.670255][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2868.670257][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2868.670263][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2868.670267][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2868.670270][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2868.670274][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2868.670279][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2868.670284][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2868.670289][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2868.670294][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2868.670300][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2868.670306][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2868.670309][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2868.670312][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2868.670316][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2868.670320][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2868.670322][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2868.670328][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2868.670331][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2868.670334][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2868.670338][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2868.670343][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2868.670346][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2868.670349][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2868.670353][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2868.670356][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2868.670360][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2868.670365][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2868.670368][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2868.670373][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2868.670377][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2868.670381][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2868.670386][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2868.670390][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2868.670396][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2868.670400][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2868.670403][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2868.670408][    C3]  </IRQ>
[ 2868.670410][    C3]  <TASK>
[ 2868.670411][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2868.670416][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2868.670420][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2868.670423][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2868.670426][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2868.670428][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2868.670430][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2868.670432][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2868.670434][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2868.670438][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2868.670444][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2868.670450][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2868.670454][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2868.670458][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2868.670461][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2868.670466][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2868.670468][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2868.670474][ C3] xas_alloc (lib/xarray.c:378) 
[ 2868.670478][ C3] xas_create (lib/xarray.c:685) 
[ 2868.670484][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2868.670489][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2868.670492][ C3] __xa_store (lib/xarray.c:1703) 
[ 2868.670496][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2868.670501][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2868.670504][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2868.670507][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2868.670512][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2868.670516][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2868.670519][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2868.670524][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2868.670526][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2868.670529][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2868.670533][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2868.670536][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2868.670541][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2868.670545][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2868.670550][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2868.670554][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2868.670558][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2868.670567][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2868.670571][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2868.670576][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2868.670580][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2868.670584][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2868.670588][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2868.670590][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2868.670594][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2868.670600][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2868.670604][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2868.670609][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2868.670612][    C3] RIP: 0033:0x7f439756d93b
[ 2868.670616][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2868.670619][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2868.670621][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2868.670623][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2868.670626][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2868.670627][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2868.670629][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2872.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2872.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2872.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 2872.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 2872.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2872.669141][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2872.669146][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2872.669149][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2872.669151][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2872.669154][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2872.669156][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2872.669158][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2872.669160][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2872.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2872.669164][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2872.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2872.669169][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2872.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2872.669172][    C2] PKRU: 55555554
[ 2872.669174][    C2] Call Trace:
[ 2872.669176][    C2]  <TASK>
[ 2872.669178][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2872.669182][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2872.669186][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2872.669189][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2872.669194][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2872.669198][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2872.669201][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2872.669204][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2872.669209][ C2] xa_store (lib/xarray.c:1734) 
[ 2872.669213][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2872.669216][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2872.669221][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2872.669224][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2872.669227][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2872.669232][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2872.669235][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2872.669241][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2872.669244][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2872.669249][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2872.669253][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2872.669257][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2872.669264][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2872.669267][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2872.669272][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2872.669276][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2872.669280][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2872.669283][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2872.669286][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2872.669289][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2872.669294][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2872.669298][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2872.669302][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2872.669305][    C2] RIP: 0033:0x7f439756d93b
[ 2872.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2872.669311][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2872.669314][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2872.669316][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2872.669318][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2872.669320][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2872.669322][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2896.656139][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2896.656150][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2896.656153][ C0] softirqs last disabled at (0): 0x0 
| [ 2896.656167][    C0] Tainted: [L]=SOFTLOCKUP
[ 2896.656169][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2896.656172][ C0] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 2896.656180][ C0] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 2896.656183][    C0] RSP: 0018:ffffc900034c7a10 EFLAGS: 00000202
[ 2896.656187][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2896.656189][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2896.656191][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2896.656193][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2896.656195][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2896.656198][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2896.656201][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2896.656204][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2896.656206][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2896.656207][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2896.656209][    C0] PKRU: 55555554
[ 2896.656210][    C0] Call Trace:
[ 2896.656215][    C0]  <TASK>
[ 2896.656218][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2896.656229][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2896.656233][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2896.656238][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2896.656242][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2896.656250][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2896.656254][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2896.656257][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2896.656260][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2896.656267][ C0] xa_store (lib/xarray.c:1734) 
[ 2896.656271][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2896.656278][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2896.656283][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2896.656286][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2896.656289][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2896.656296][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2896.656300][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2896.656308][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2896.656311][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2896.656316][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2896.656324][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2896.656328][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2896.656338][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2896.656342][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2896.656349][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2896.656354][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2896.656357][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2896.656362][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2896.656365][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2896.656369][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2896.656376][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2896.656380][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2896.656386][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2896.656392][    C0] RIP: 0033:0x7f439756d93b
[ 2896.656396][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2896.656398][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2896.656401][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2896.656403][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2896.656406][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2896.656407][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2896.656409][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2896.669123][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2896.669128][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2896.669132][ C1] softirqs last disabled at (0): 0x0 
| [ 2896.669141][    C1] Tainted: [L]=SOFTLOCKUP
[ 2896.669142][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2896.669144][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2896.669149][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2896.669152][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2896.669155][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2896.669157][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2896.669159][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2896.669161][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2896.669163][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2896.669165][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2896.669168][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2896.669171][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2896.669173][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2896.669175][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2896.669177][    C1] PKRU: 55555554
[ 2896.669178][    C1] Call Trace:
[ 2896.669181][    C1]  <TASK>
[ 2896.669183][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2896.669187][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2896.669191][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2896.669194][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2896.669199][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2896.669202][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2896.669205][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2896.669208][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2896.669214][ C1] xa_store (lib/xarray.c:1734) 
[ 2896.669218][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2896.669222][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2896.669227][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2896.669230][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2896.669233][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2896.669238][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2896.669241][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2896.669247][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2896.669251][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2896.669255][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2896.669260][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2896.669264][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2896.669271][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2896.669274][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2896.669279][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2896.669283][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2896.669287][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2896.669291][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2896.669294][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2896.669297][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2896.669303][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2896.669306][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2896.669310][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2896.669314][    C1] RIP: 0033:0x7f439756d93b
[ 2896.669317][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2896.669320][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2896.669323][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2896.669325][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2896.669327][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2896.669329][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2896.669331][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2896.670135][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2896.670144][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2896.670147][ C3] softirqs last disabled at (0): 0x0 
| [ 2896.670160][    C3] Tainted: [L]=SOFTLOCKUP
[ 2896.670161][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2896.670164][ C3] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2896.670172][ C3] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2896.670176][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2896.670179][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2896.670181][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2896.670183][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2896.670186][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2896.670188][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2896.670190][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2896.670192][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2896.670197][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2896.670199][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2896.670200][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2896.670202][    C3] PKRU: 55555554
[ 2896.670203][    C3] Call Trace:
[ 2896.670208][    C3]  <IRQ>
[ 2896.670210][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2896.670215][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2896.670221][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2896.670224][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2896.670229][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2896.670233][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2896.670236][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2896.670241][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2896.670244][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2896.670248][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2896.670250][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2896.670253][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2896.670256][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2896.670261][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2896.670266][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2896.670269][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2896.670273][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2896.670278][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2896.670282][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2896.670287][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2896.670292][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2896.670299][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2896.670304][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2896.670307][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2896.670310][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2896.670314][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2896.670317][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2896.670320][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2896.670327][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2896.670330][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2896.670333][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2896.670338][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2896.670342][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2896.670346][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2896.670349][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2896.670352][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2896.670356][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2896.670360][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2896.670365][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2896.670367][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2896.670373][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2896.670377][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2896.670381][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2896.670386][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2896.670390][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2896.670397][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2896.670401][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2896.670404][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2896.670409][    C3]  </IRQ>
[ 2896.670410][    C3]  <TASK>
[ 2896.670411][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2896.670417][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2896.670420][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2896.670423][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2896.670426][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2896.670428][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2896.670430][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2896.670432][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2896.670435][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2896.670438][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2896.670444][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2896.670450][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2896.670454][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2896.670458][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2896.670461][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2896.670466][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2896.670468][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2896.670474][ C3] xas_alloc (lib/xarray.c:378) 
[ 2896.670479][ C3] xas_create (lib/xarray.c:685) 
[ 2896.670485][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2896.670490][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2896.670494][ C3] __xa_store (lib/xarray.c:1703) 
[ 2896.670498][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2896.670503][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2896.670505][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2896.670508][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2896.670513][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2896.670517][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2896.670521][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2896.670526][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2896.670529][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2896.670532][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2896.670536][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2896.670540][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2896.670545][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2896.670549][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2896.670554][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2896.670558][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2896.670562][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2896.670571][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2896.670575][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2896.670580][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2896.670584][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2896.670587][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2896.670591][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2896.670594][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2896.670597][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2896.670603][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2896.670607][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2896.670612][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2896.670616][    C3] RIP: 0033:0x7f439756d93b
[ 2896.670621][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2896.670623][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2896.670627][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2896.670629][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2896.670631][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2896.670632][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2896.670634][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2900.669121][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2900.669126][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2900.669130][ C2] softirqs last disabled at (0): 0x0 
| [ 2900.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 2900.669140][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2900.669142][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2900.669147][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 2900.669150][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2900.669152][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2900.669154][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2900.669157][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2900.669159][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2900.669161][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2900.669163][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2900.669166][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2900.669169][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2900.669171][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2900.669173][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2900.669175][    C2] PKRU: 55555554
[ 2900.669176][    C2] Call Trace:
[ 2900.669178][    C2]  <TASK>
[ 2900.669180][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2900.669184][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2900.669188][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2900.669191][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2900.669196][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2900.669199][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2900.669202][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2900.669205][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2900.669210][ C2] xa_store (lib/xarray.c:1734) 
[ 2900.669214][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2900.669218][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2900.669223][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2900.669226][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2900.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2900.669233][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2900.669237][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2900.669242][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2900.669246][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2900.669250][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2900.669254][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2900.669259][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2900.669265][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2900.669269][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2900.669273][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2900.669277][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2900.669281][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2900.669284][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2900.669287][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2900.669290][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2900.669296][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2900.669300][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2900.669304][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2900.669307][    C2] RIP: 0033:0x7f439756d93b
[ 2900.669312][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2900.669315][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2900.669318][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2900.669320][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2900.669322][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2900.669324][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2900.669325][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2920.409556][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 2920.409844][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 2920.410083][    C1] NMI backtrace for cpu 1
| [ 2920.410094][    C1] Tainted: [L]=SOFTLOCKUP
[ 2920.410095][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2920.410097][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2920.410102][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2920.410105][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2920.410108][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2920.410110][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2920.410112][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2920.410114][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2920.410116][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2920.410118][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2920.410121][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2920.410124][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2920.410125][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2920.410127][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2920.410128][    C1] PKRU: 55555554
[ 2920.410129][    C1] Call Trace:
[ 2920.410131][    C1]  <TASK>
[ 2920.410133][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2920.410136][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2920.410140][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2920.410143][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2920.410148][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2920.410151][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2920.410154][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2920.410156][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2920.410161][ C1] xa_store (lib/xarray.c:1734) 
[ 2920.410165][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2920.410168][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2920.410172][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2920.410175][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2920.410178][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2920.410182][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2920.410186][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2920.410191][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2920.410195][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2920.410199][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2920.410203][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2920.410207][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2920.410214][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2920.410217][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2920.410222][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2920.410226][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2920.410230][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2920.410234][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2920.410236][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2920.410240][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2920.410245][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2920.410249][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2920.410253][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2920.410256][    C1] RIP: 0033:0x7f439756d93b
[ 2920.410260][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2920.410262][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2920.410265][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2920.410267][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2920.410268][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2920.410270][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2920.410272][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2920.410270][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 2920.410272][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2920.410278][    C1]  </TASK>
| [ 2920.411088][    C3] Tainted: [L]=SOFTLOCKUP
[ 2920.411090][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2920.411092][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2920.411097][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2920.411100][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2920.411104][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2920.411106][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2920.411108][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2920.411110][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2920.411112][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2920.411115][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2920.411118][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2920.411122][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2920.411125][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2920.411126][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2920.411128][    C3] PKRU: 55555554
[ 2920.411129][    C3] Call Trace:
[ 2920.411131][    C3]  <IRQ>
[ 2920.411132][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2920.411137][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2920.411141][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2920.411144][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2920.411147][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2920.411152][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2920.411155][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2920.411159][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2920.411162][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2920.411165][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2920.411167][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2920.411170][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2920.411173][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2920.411179][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2920.411182][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2920.411185][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2920.411188][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2920.411193][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2920.411197][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2920.411202][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2920.411206][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2920.411212][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2920.411217][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2920.411219][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2920.411222][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2920.411226][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2920.411229][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2920.411232][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2920.411237][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2920.411241][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2920.411244][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2920.411248][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2920.411252][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2920.411255][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2920.411258][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2920.411262][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2920.411265][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2920.411269][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2920.411273][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2920.411276][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2920.411281][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2920.411285][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2920.411289][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2920.411293][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2920.411297][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2920.411303][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2920.411306][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2920.411309][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2920.411313][    C3]  </IRQ>
[ 2920.411314][    C3]  <TASK>
[ 2920.411315][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2920.411319][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2920.411322][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2920.411325][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2920.411327][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2920.411329][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2920.411331][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2920.411332][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2920.411334][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2920.411338][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2920.411344][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2920.411349][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2920.411352][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2920.411357][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2920.411360][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2920.411363][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2920.411366][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2920.411371][ C3] xas_alloc (lib/xarray.c:378) 
[ 2920.411375][ C3] xas_create (lib/xarray.c:685) 
[ 2920.411381][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2920.411385][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2920.411389][ C3] __xa_store (lib/xarray.c:1703) 
[ 2920.411393][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2920.411397][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2920.411400][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2920.411403][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2920.411408][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2920.411411][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2920.411414][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2920.411419][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2920.411422][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2920.411424][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2920.411428][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2920.411432][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2920.411436][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2920.411440][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2920.411444][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2920.411448][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2920.411452][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2920.411459][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2920.411463][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2920.411468][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2920.411473][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2920.411477][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2920.411480][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2920.411483][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2920.411486][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2920.411493][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2920.411497][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2920.411501][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2920.411504][    C3] RIP: 0033:0x7f439756d93b
[ 2920.411508][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2920.411511][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2920.411514][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2920.411515][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2920.411517][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2920.411519][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2920.411521][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2924.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2924.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2924.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 2924.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 2924.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2924.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2924.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2924.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2924.656151][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2924.656153][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2924.656155][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2924.656157][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2924.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2924.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2924.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2924.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2924.656168][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2924.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2924.656172][    C0] PKRU: 55555554
[ 2924.656173][    C0] Call Trace:
[ 2924.656175][    C0]  <TASK>
[ 2924.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2924.656180][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2924.656184][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2924.656187][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2924.656192][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2924.656195][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2924.656198][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2924.656200][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2924.656205][ C0] xa_store (lib/xarray.c:1734) 
[ 2924.656209][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2924.656212][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2924.656217][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2924.656220][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2924.656223][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2924.656227][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2924.656231][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2924.656236][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2924.656240][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2924.656244][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2924.656248][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2924.656253][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2924.656259][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2924.656263][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2924.656267][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2924.656271][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2924.656274][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2924.656278][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2924.656281][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2924.656285][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2924.656290][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2924.656294][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2924.656298][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2924.656302][    C0] RIP: 0033:0x7f439756d93b
[ 2924.656305][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2924.656308][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2924.656311][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2924.656313][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2924.656315][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2924.656317][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2924.656319][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2928.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2928.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2928.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 2928.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 2928.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2928.669141][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2928.669145][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2928.669148][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2928.669151][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2928.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2928.669155][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2928.669157][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2928.669159][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2928.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2928.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2928.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2928.669169][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2928.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2928.669172][    C2] PKRU: 55555554
[ 2928.669174][    C2] Call Trace:
[ 2928.669176][    C2]  <TASK>
[ 2928.669179][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2928.669183][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2928.669187][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2928.669190][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2928.669195][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2928.669198][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2928.669201][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2928.669204][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2928.669210][ C2] xa_store (lib/xarray.c:1734) 
[ 2928.669213][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2928.669217][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2928.669222][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2928.669225][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2928.669227][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2928.669232][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2928.669236][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2928.669241][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2928.669245][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2928.669250][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2928.669254][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2928.669258][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2928.669264][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2928.669268][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2928.669272][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2928.669277][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2928.669280][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2928.669284][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2928.669287][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2928.669291][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2928.669296][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2928.669300][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2928.669304][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2928.669307][    C2] RIP: 0033:0x7f439756d93b
[ 2928.669311][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2928.669314][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2928.669317][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2928.669319][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2928.669321][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2928.669322][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2928.669325][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2944.669125][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2944.669130][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2944.669134][ C1] softirqs last disabled at (0): 0x0 
| [ 2944.669144][    C1] Tainted: [L]=SOFTLOCKUP
[ 2944.669146][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2944.669148][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2944.669155][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2944.669158][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2944.669161][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2944.669163][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2944.669165][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2944.669167][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2944.669169][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2944.669171][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2944.669173][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2944.669177][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2944.669179][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2944.669180][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2944.669182][    C1] PKRU: 55555554
[ 2944.669183][    C1] Call Trace:
[ 2944.669186][    C1]  <TASK>
[ 2944.669189][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2944.669192][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2944.669196][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2944.669199][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2944.669204][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2944.669208][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2944.669210][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2944.669213][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2944.669218][ C1] xa_store (lib/xarray.c:1734) 
[ 2944.669222][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2944.669226][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2944.669231][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2944.669234][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2944.669237][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2944.669241][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2944.669244][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2944.669250][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2944.669254][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2944.669258][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2944.669263][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2944.669267][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2944.669274][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2944.669278][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2944.669282][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2944.669287][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2944.669290][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2944.669294][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2944.669297][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2944.669300][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2944.669306][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2944.669309][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2944.669314][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2944.669317][    C1] RIP: 0033:0x7f439756d93b
[ 2944.669320][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2944.669323][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2944.669326][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2944.669328][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2944.669331][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2944.669332][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2944.669334][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2944.670136][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2944.670144][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2944.670148][ C3] softirqs last disabled at (0): 0x0 
| [ 2944.670161][    C3] Tainted: [L]=SOFTLOCKUP
[ 2944.670162][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2944.670165][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2944.670173][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2944.670177][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2944.670180][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2944.670182][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2944.670184][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2944.670186][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2944.670188][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2944.670190][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2944.670192][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2944.670197][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2944.670198][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2944.670200][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2944.670202][    C3] PKRU: 55555554
[ 2944.670203][    C3] Call Trace:
[ 2944.670207][    C3]  <IRQ>
[ 2944.670209][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2944.670215][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2944.670220][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2944.670223][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2944.670228][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2944.670233][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2944.670236][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2944.670240][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2944.670243][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2944.670247][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2944.670249][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2944.670252][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2944.670255][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2944.670260][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2944.670265][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2944.670268][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2944.670271][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2944.670277][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2944.670281][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2944.670286][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2944.670291][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2944.670297][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2944.670303][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2944.670306][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2944.670309][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2944.670313][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2944.670317][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2944.670319][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2944.670326][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2944.670329][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2944.670332][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2944.670337][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2944.670341][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2944.670345][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2944.670348][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2944.670352][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2944.670355][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2944.670359][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2944.670364][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2944.670367][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2944.670372][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2944.670377][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2944.670380][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2944.670385][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2944.670390][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2944.670396][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2944.670400][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2944.670404][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2944.670408][    C3]  </IRQ>
[ 2944.670409][    C3]  <TASK>
[ 2944.670411][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2944.670416][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2944.670419][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2944.670422][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2944.670425][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2944.670427][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2944.670429][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2944.670431][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2944.670433][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2944.670437][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2944.670443][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2944.670449][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2944.670453][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2944.670457][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2944.670460][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2944.670465][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2944.670467][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2944.670473][ C3] xas_alloc (lib/xarray.c:378) 
[ 2944.670477][ C3] xas_create (lib/xarray.c:685) 
[ 2944.670484][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2944.670488][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2944.670492][ C3] __xa_store (lib/xarray.c:1703) 
[ 2944.670496][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2944.670501][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2944.670504][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2944.670507][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2944.670512][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2944.670516][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2944.670519][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2944.670524][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2944.670526][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2944.670529][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2944.670533][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2944.670537][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2944.670541][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2944.670545][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2944.670550][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2944.670554][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2944.670558][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2944.670566][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2944.670570][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2944.670575][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2944.670580][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2944.670583][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2944.670587][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2944.670590][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2944.670593][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2944.670600][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2944.670604][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2944.670609][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2944.670613][    C3] RIP: 0033:0x7f439756d93b
[ 2944.670617][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2944.670620][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2944.670623][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2944.670625][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2944.670627][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2944.670629][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2944.670631][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2952.656121][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2952.656127][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2952.656130][ C0] softirqs last disabled at (0): 0x0 
| [ 2952.656139][    C0] Tainted: [L]=SOFTLOCKUP
[ 2952.656141][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2952.656143][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2952.656148][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2952.656151][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2952.656153][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2952.656155][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2952.656157][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2952.656159][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2952.656161][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2952.656163][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2952.656165][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2952.656169][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2952.656171][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2952.656172][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2952.656174][    C0] PKRU: 55555554
[ 2952.656175][    C0] Call Trace:
[ 2952.656177][    C0]  <TASK>
[ 2952.656179][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2952.656183][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2952.656186][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2952.656189][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2952.656195][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2952.656198][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2952.656201][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2952.656203][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2952.656209][ C0] xa_store (lib/xarray.c:1734) 
[ 2952.656213][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2952.656216][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2952.656221][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2952.656224][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2952.656227][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2952.656232][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2952.656235][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2952.656240][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2952.656244][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2952.656249][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2952.656253][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2952.656257][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2952.656264][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2952.656267][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2952.656271][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2952.656276][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2952.656279][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2952.656283][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2952.656286][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2952.656290][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2952.656295][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2952.656299][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2952.656303][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2952.656306][    C0] RIP: 0033:0x7f439756d93b
[ 2952.656309][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2952.656312][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2952.656315][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2952.656317][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2952.656319][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2952.656321][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2952.656323][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2956.669121][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2956.669126][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2956.669130][ C2] softirqs last disabled at (0): 0x0 
| [ 2956.669139][    C2] Tainted: [L]=SOFTLOCKUP
[ 2956.669140][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2956.669142][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2956.669147][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2956.669150][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 2956.669153][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2956.669155][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2956.669157][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2956.669159][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2956.669161][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2956.669163][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2956.669166][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2956.669169][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2956.669171][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2956.669173][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2956.669174][    C2] PKRU: 55555554
[ 2956.669176][    C2] Call Trace:
[ 2956.669178][    C2]  <TASK>
[ 2956.669180][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2956.669184][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2956.669188][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2956.669191][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2956.669196][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2956.669199][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2956.669202][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2956.669205][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2956.669210][ C2] xa_store (lib/xarray.c:1734) 
[ 2956.669214][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2956.669217][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2956.669222][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2956.669225][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2956.669228][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2956.669233][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2956.669236][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2956.669241][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2956.669245][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2956.669250][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2956.669254][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2956.669258][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2956.669265][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2956.669269][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2956.669273][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2956.669277][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2956.669281][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2956.669285][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2956.669288][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2956.669291][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2956.669296][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2956.669300][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2956.669304][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2956.669308][    C2] RIP: 0033:0x7f439756d93b
[ 2956.669311][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2956.669314][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2956.669317][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2956.669319][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2956.669321][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2956.669323][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2956.669325][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2972.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2972.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2972.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 2972.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 2972.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2972.669140][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2972.669145][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2972.669148][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2972.669150][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2972.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2972.669154][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2972.669156][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2972.669158][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2972.669160][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2972.669163][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2972.669166][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2972.669168][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2972.669169][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2972.669171][    C1] PKRU: 55555554
[ 2972.669172][    C1] Call Trace:
[ 2972.669174][    C1]  <TASK>
[ 2972.669176][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2972.669180][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2972.669184][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2972.669187][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2972.669192][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2972.669195][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2972.669198][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2972.669201][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2972.669206][ C1] xa_store (lib/xarray.c:1734) 
[ 2972.669210][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2972.669213][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2972.669218][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2972.669221][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2972.669224][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2972.669228][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2972.669231][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2972.669237][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2972.669240][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2972.669245][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2972.669249][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2972.669254][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2972.669260][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2972.669264][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2972.669269][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2972.669273][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2972.669276][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2972.669280][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2972.669283][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2972.669286][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2972.669292][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2972.669296][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2972.669300][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2972.669303][    C1] RIP: 0033:0x7f439756d93b
[ 2972.669306][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2972.669308][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2972.669311][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2972.669313][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2972.669316][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2972.669317][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2972.669319][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2972.670134][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2972.670142][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2972.670145][ C3] softirqs last disabled at (0): 0x0 
| [ 2972.670157][    C3] Tainted: [L]=SOFTLOCKUP
[ 2972.670158][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2972.670161][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2972.670168][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2972.670171][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2972.670174][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2972.670176][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2972.670178][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2972.670180][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2972.670182][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2972.670184][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2972.670187][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2972.670191][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2972.670193][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2972.670195][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2972.670197][    C3] PKRU: 55555554
[ 2972.670198][    C3] Call Trace:
[ 2972.670203][    C3]  <IRQ>
[ 2972.670204][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2972.670210][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2972.670215][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2972.670218][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2972.670222][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2972.670227][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2972.670230][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2972.670234][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2972.670237][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2972.670241][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2972.670243][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2972.670246][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2972.670248][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2972.670254][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2972.670259][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2972.670261][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2972.670265][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2972.670270][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2972.670275][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2972.670280][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2972.670284][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2972.670290][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2972.670295][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2972.670298][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2972.670301][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2972.670305][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2972.670308][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2972.670311][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2972.670317][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2972.670320][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2972.670323][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2972.670327][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2972.670331][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2972.670334][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2972.670337][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2972.670340][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2972.670344][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2972.670348][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2972.670352][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2972.670355][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2972.670360][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2972.670364][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2972.670368][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2972.670373][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2972.670378][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2972.670384][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2972.670387][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2972.670391][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2972.670395][    C3]  </IRQ>
[ 2972.670396][    C3]  <TASK>
[ 2972.670397][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2972.670403][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2972.670406][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2972.670409][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2972.670412][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2972.670414][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2972.670416][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2972.670418][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2972.670420][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2972.670424][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2972.670430][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2972.670436][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2972.670439][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2972.670444][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2972.670447][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2972.670451][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2972.670453][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2972.670458][ C3] xas_alloc (lib/xarray.c:378) 
[ 2972.670463][ C3] xas_create (lib/xarray.c:685) 
[ 2972.670469][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2972.670474][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2972.670477][ C3] __xa_store (lib/xarray.c:1703) 
[ 2972.670482][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2972.670486][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2972.670489][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2972.670492][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2972.670497][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2972.670501][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2972.670504][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2972.670509][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2972.670512][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2972.670514][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2972.670518][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2972.670522][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2972.670527][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2972.670531][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2972.670535][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2972.670539][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2972.670544][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2972.670552][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2972.670556][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2972.670561][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2972.670566][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2972.670570][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2972.670573][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2972.670576][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2972.670580][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2972.670586][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2972.670589][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2972.670594][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2972.670597][    C3] RIP: 0033:0x7f439756d93b
[ 2972.670602][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2972.670605][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2972.670608][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2972.670611][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2972.670613][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2972.670615][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2972.670617][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2980.656121][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2980.656126][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2980.656130][ C0] softirqs last disabled at (0): 0x0 
| [ 2980.656139][    C0] Tainted: [L]=SOFTLOCKUP
[ 2980.656140][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2980.656142][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2980.656146][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2980.656150][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 2980.656152][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2980.656154][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2980.656157][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2980.656159][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 2980.656161][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 2980.656163][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 2980.656166][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2980.656169][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 2980.656171][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2980.656173][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2980.656174][    C0] PKRU: 55555554
[ 2980.656176][    C0] Call Trace:
[ 2980.656177][    C0]  <TASK>
[ 2980.656180][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2980.656183][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2980.656187][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2980.656191][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2980.656196][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2980.656199][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2980.656202][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2980.656205][ C0] ? xa_store (lib/xarray.c:1734) 
[ 2980.656210][ C0] xa_store (lib/xarray.c:1734) 
[ 2980.656214][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2980.656217][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2980.656222][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2980.656225][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2980.656228][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2980.656232][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2980.656236][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2980.656241][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2980.656245][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2980.656250][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2980.656254][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 2980.656259][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2980.656265][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2980.656269][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 2980.656273][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 2980.656278][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2980.656281][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2980.656285][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2980.656288][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2980.656291][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2980.656297][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2980.656301][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2980.656305][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2980.656308][    C0] RIP: 0033:0x7f439756d93b
[ 2980.656311][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2980.656313][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2980.656316][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2980.656318][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2980.656320][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 2980.656322][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2980.656324][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 2984.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 2984.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 2984.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 2984.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 2984.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2984.669141][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 2984.669146][ C2] Code: ff fe 48 39 c7 77 23 44 89 c2 e8 b7 e7 ff ff 83 f0 01 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd <4c> 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48
All code
========
   0:	ff                   	(bad)
   1:	fe 48 39             	decb   0x39(%rax)
   4:	c7                   	(bad)
   5:	77 23                	ja     0x2a
   7:	44 89 c2             	mov    %r8d,%edx
   a:	e8 b7 e7 ff ff       	call   0xffffffffffffe7c6
   f:	83 f0 01             	xor    $0x1,%eax
  12:	5b                   	pop    %rbx
  13:	5d                   	pop    %rbp
  14:	41 5c                	pop    %r12
  16:	c3                   	ret
  17:	cc                   	int3
  18:	cc                   	int3
  19:	cc                   	int3
  1a:	cc                   	int3
  1b:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  22:	7f ff ff 
  25:	48 39 c7             	cmp    %rax,%rdi
  28:	76 dd                	jbe    0x7
  2a:*	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10		<-- trapping instruction
  2f:	48 89 fd             	mov    %rdi,%rbp
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4d 89 d1             	mov    %r10,%r9
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   5:	48 89 fd             	mov    %rdi,%rbp
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4d 89 d1             	mov    %r10,%r9
  15:	48                   	rex.W
[ 2984.669150][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000212
[ 2984.669152][    C2] RAX: ffff7fffffffffff RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2984.669154][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2984.669156][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2984.669158][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 2984.669160][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 2984.669162][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 2984.669165][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2984.669168][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 2984.669170][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2984.669172][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2984.669173][    C2] PKRU: 55555554
[ 2984.669175][    C2] Call Trace:
[ 2984.669176][    C2]  <TASK>
[ 2984.669179][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 2984.669184][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2984.669187][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2984.669191][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2984.669194][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2984.669199][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2984.669202][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2984.669205][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2984.669208][ C2] ? xa_store (lib/xarray.c:1734) 
[ 2984.669213][ C2] xa_store (lib/xarray.c:1734) 
[ 2984.669217][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2984.669221][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2984.669226][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2984.669229][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2984.669232][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2984.669236][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2984.669240][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2984.669245][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2984.669249][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2984.669253][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2984.669257][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 2984.669261][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2984.669268][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2984.669272][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 2984.669276][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 2984.669281][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2984.669284][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2984.669288][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2984.669290][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2984.669294][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2984.669299][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2984.669303][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2984.669307][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2984.669310][    C2] RIP: 0033:0x7f439756d93b
[ 2984.669314][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2984.669317][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2984.669320][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2984.669322][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2984.669324][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2984.669326][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2984.669328][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 2998.423835][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 2998.424270][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 2998.424515][    C1] NMI backtrace for cpu 1
| [ 2998.424526][    C1] Tainted: [L]=SOFTLOCKUP
[ 2998.424527][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2998.424529][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2998.424535][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2998.424539][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 2998.424542][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2998.424544][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2998.424546][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2998.424548][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 2998.424550][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 2998.424552][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 2998.424554][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2998.424557][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 2998.424559][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2998.424561][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2998.424562][    C1] PKRU: 55555554
[ 2998.424564][    C1] Call Trace:
[ 2998.424565][    C1]  <TASK>
[ 2998.424568][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2998.424571][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2998.424575][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2998.424578][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 2998.424583][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2998.424586][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2998.424588][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2998.424591][ C1] ? xa_store (lib/xarray.c:1734) 
[ 2998.424596][ C1] xa_store (lib/xarray.c:1734) 
[ 2998.424600][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2998.424603][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2998.424608][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2998.424611][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2998.424614][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2998.424618][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2998.424621][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2998.424627][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2998.424631][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2998.424635][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2998.424639][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 2998.424643][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2998.424649][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2998.424653][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 2998.424657][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 2998.424662][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2998.424665][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2998.424669][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2998.424672][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2998.424675][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2998.424680][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2998.424684][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2998.424688][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2998.424691][    C1] RIP: 0033:0x7f439756d93b
[ 2998.424695][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2998.424698][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2998.424701][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2998.424703][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2998.424704][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 2998.424706][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2998.424708][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2998.424706][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 2998.424708][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 2998.424714][    C1]  </TASK>
| [ 2998.425520][    C3] Tainted: [L]=SOFTLOCKUP
[ 2998.425522][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2998.425524][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 2998.425529][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 2998.425532][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 2998.425536][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 2998.425538][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 2998.425540][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 2998.425542][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 2998.425544][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 2998.425545][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 2998.425548][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2998.425552][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 2998.425554][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2998.425556][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2998.425558][    C3] PKRU: 55555554
[ 2998.425559][    C3] Call Trace:
[ 2998.425560][    C3]  <IRQ>
[ 2998.425562][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 2998.425567][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 2998.425572][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 2998.425576][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2998.425579][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2998.425583][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2998.425587][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2998.425590][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2998.425593][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 2998.425597][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2998.425599][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2998.425602][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2998.425605][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2998.425610][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 2998.425614][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2998.425617][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2998.425620][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2998.425626][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 2998.425630][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 2998.425635][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2998.425639][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2998.425645][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 2998.425651][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2998.425653][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2998.425656][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 2998.425659][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 2998.425663][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 2998.425666][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2998.425671][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2998.425674][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 2998.425678][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 2998.425682][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 2998.425686][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2998.425689][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 2998.425692][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 2998.425696][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2998.425699][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2998.425704][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 2998.425708][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2998.425711][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 2998.425716][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 2998.425719][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2998.425723][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2998.425727][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 2998.425732][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 2998.425737][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 2998.425741][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 2998.425744][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 2998.425747][    C3]  </IRQ>
[ 2998.425749][    C3]  <TASK>
[ 2998.425750][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 2998.425754][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 2998.425757][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 2998.425760][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 2998.425763][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 2998.425764][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 2998.425766][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 2998.425768][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 2998.425769][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 2998.425773][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 2998.425779][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 2998.425784][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 2998.425787][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2998.425792][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2998.425795][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 2998.425799][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 2998.425802][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 2998.425807][ C3] xas_alloc (lib/xarray.c:378) 
[ 2998.425811][ C3] xas_create (lib/xarray.c:685) 
[ 2998.425816][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 2998.425821][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2998.425824][ C3] __xa_store (lib/xarray.c:1703) 
[ 2998.425828][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 2998.425833][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2998.425836][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 2998.425839][ C3] ? xa_store (lib/xarray.c:1734) 
[ 2998.425843][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 2998.425847][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 2998.425850][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 2998.425855][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 2998.425858][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 2998.425860][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2998.425864][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 2998.425868][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 2998.425872][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 2998.425876][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 2998.425881][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 2998.425884][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 2998.425888][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 2998.425895][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 2998.425898][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 2998.425903][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 2998.425909][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 2998.425912][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 2998.425915][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 2998.425918][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 2998.425921][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 2998.425928][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 2998.425931][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 2998.425936][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2998.425939][    C3] RIP: 0033:0x7f439756d93b
[ 2998.425943][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 2998.425945][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 2998.425948][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 2998.425950][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 2998.425952][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 2998.425954][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 2998.425955][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3008.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3008.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3008.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 3008.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 3008.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3008.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3008.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3008.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3008.656151][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3008.656153][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3008.656155][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3008.656157][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3008.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3008.656162][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3008.656164][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3008.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3008.656170][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3008.656171][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3008.656173][    C0] PKRU: 55555554
[ 3008.656174][    C0] Call Trace:
[ 3008.656175][    C0]  <TASK>
[ 3008.656178][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3008.656181][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3008.656185][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3008.656188][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3008.656194][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3008.656197][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3008.656199][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3008.656203][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3008.656208][ C0] xa_store (lib/xarray.c:1734) 
[ 3008.656211][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3008.656215][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3008.656220][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3008.656223][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3008.656226][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3008.656230][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3008.656234][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3008.656239][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3008.656243][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3008.656248][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3008.656252][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3008.656256][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3008.656263][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3008.656267][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3008.656271][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3008.656275][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3008.656278][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3008.656282][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3008.656285][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3008.656289][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3008.656294][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3008.656297][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3008.656302][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3008.656305][    C0] RIP: 0033:0x7f439756d93b
[ 3008.656308][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3008.656311][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3008.656314][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3008.656316][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3008.656318][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3008.656320][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3008.656322][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3012.669121][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3012.669126][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3012.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 3012.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 3012.669140][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3012.669142][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3012.669147][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3012.669150][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3012.669152][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3012.669155][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3012.669156][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3012.669159][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3012.669161][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3012.669163][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3012.669165][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3012.669169][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3012.669171][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3012.669172][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3012.669174][    C2] PKRU: 55555554
[ 3012.669175][    C2] Call Trace:
[ 3012.669177][    C2]  <TASK>
[ 3012.669179][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3012.669183][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3012.669187][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3012.669190][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3012.669195][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3012.669198][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3012.669201][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3012.669203][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3012.669208][ C2] xa_store (lib/xarray.c:1734) 
[ 3012.669213][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3012.669216][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3012.669221][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3012.669224][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3012.669227][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3012.669231][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3012.669234][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3012.669240][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3012.669243][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3012.669248][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3012.669252][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3012.669256][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3012.669262][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3012.669266][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3012.669270][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3012.669275][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3012.669278][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3012.669281][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3012.669284][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3012.669288][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3012.669293][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3012.669297][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3012.669301][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3012.669305][    C2] RIP: 0033:0x7f439756d93b
[ 3012.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3012.669311][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3012.669314][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3012.669316][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3012.669318][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3012.669320][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3012.669322][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3024.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3024.669126][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3024.669129][ C1] softirqs last disabled at (0): 0x0 
| [ 3024.669138][    C1] Tainted: [L]=SOFTLOCKUP
[ 3024.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3024.669141][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3024.669147][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3024.669150][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3024.669153][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3024.669155][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3024.669157][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3024.669159][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3024.669162][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3024.669163][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3024.669166][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3024.669169][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3024.669171][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3024.669173][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3024.669175][    C1] PKRU: 55555554
[ 3024.669176][    C1] Call Trace:
[ 3024.669178][    C1]  <TASK>
[ 3024.669180][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3024.669184][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3024.669188][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3024.669191][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3024.669196][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3024.669200][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3024.669203][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3024.669205][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3024.669211][ C1] xa_store (lib/xarray.c:1734) 
[ 3024.669215][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3024.669218][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3024.669223][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3024.669226][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3024.669229][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3024.669233][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3024.669236][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3024.669242][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3024.669245][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3024.669250][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3024.669254][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3024.669258][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3024.669265][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3024.669268][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3024.669273][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3024.669277][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3024.669280][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3024.669284][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3024.669287][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3024.669291][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3024.669296][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3024.669300][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3024.669304][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3024.669307][    C1] RIP: 0033:0x7f439756d93b
[ 3024.669310][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3024.669313][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3024.669316][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3024.669318][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3024.669320][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3024.669322][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3024.669324][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3024.670151][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3024.670159][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3024.670163][ C3] softirqs last disabled at (0): 0x0 
| [ 3024.670176][    C3] Tainted: [L]=SOFTLOCKUP
[ 3024.670177][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3024.670180][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3024.670189][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3024.670192][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3024.670195][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3024.670197][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3024.670199][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3024.670201][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3024.670203][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3024.670205][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3024.670208][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3024.670212][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3024.670214][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3024.670216][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3024.670218][    C3] PKRU: 55555554
[ 3024.670219][    C3] Call Trace:
[ 3024.670223][    C3]  <IRQ>
[ 3024.670225][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3024.670230][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3024.670235][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3024.670239][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3024.670243][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3024.670248][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3024.670251][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3024.670256][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3024.670259][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3024.670263][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3024.670265][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3024.670268][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3024.670271][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3024.670276][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3024.670281][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3024.670284][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3024.670288][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3024.670293][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3024.670298][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3024.670303][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3024.670308][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3024.670314][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3024.670320][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3024.670323][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3024.670326][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3024.670330][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3024.670333][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3024.670336][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3024.670343][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3024.670346][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3024.670349][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3024.670353][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3024.670358][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3024.670362][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3024.670365][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3024.670368][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3024.670372][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3024.670377][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3024.670381][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3024.670384][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3024.670390][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3024.670393][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3024.670397][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3024.670402][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3024.670406][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3024.670412][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3024.670416][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3024.670419][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3024.670424][    C3]  </IRQ>
[ 3024.670425][    C3]  <TASK>
[ 3024.670427][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3024.670432][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3024.670435][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3024.670438][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3024.670441][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3024.670444][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3024.670446][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3024.670448][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3024.670449][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3024.670454][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3024.670460][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3024.670466][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3024.670469][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3024.670474][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3024.670477][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3024.670481][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3024.670483][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3024.670489][ C3] xas_alloc (lib/xarray.c:378) 
[ 3024.670493][ C3] xas_create (lib/xarray.c:685) 
[ 3024.670500][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3024.670504][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3024.670508][ C3] __xa_store (lib/xarray.c:1703) 
[ 3024.670512][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3024.670517][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3024.670520][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3024.670523][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3024.670528][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3024.670532][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3024.670535][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3024.670540][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3024.670543][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3024.670546][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3024.670550][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3024.670554][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3024.670559][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3024.670563][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3024.670568][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3024.670572][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3024.670576][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3024.670584][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3024.670588][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3024.670594][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3024.670598][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3024.670602][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3024.670605][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3024.670608][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3024.670611][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3024.670618][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3024.670622][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3024.670627][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3024.670631][    C3] RIP: 0033:0x7f439756d93b
[ 3024.670635][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3024.670638][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3024.670641][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3024.670643][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3024.670645][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3024.670647][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3024.670649][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3036.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3036.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3036.656129][ C0] softirqs last disabled at (0): 0x0 
| [ 3036.656138][    C0] Tainted: [L]=SOFTLOCKUP
[ 3036.656139][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3036.656142][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3036.656146][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3036.656149][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3036.656152][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3036.656154][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3036.656156][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3036.656158][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3036.656160][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3036.656162][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3036.656165][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3036.656168][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3036.656170][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3036.656172][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3036.656174][    C0] PKRU: 55555554
[ 3036.656175][    C0] Call Trace:
[ 3036.656177][    C0]  <TASK>
[ 3036.656179][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3036.656182][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3036.656186][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3036.656189][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3036.656194][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3036.656197][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3036.656200][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3036.656203][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3036.656208][ C0] xa_store (lib/xarray.c:1734) 
[ 3036.656212][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3036.656216][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3036.656221][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3036.656224][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3036.656226][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3036.656231][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3036.656234][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3036.656240][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3036.656244][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3036.656248][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3036.656252][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3036.656257][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3036.656263][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3036.656267][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3036.656271][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3036.656275][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3036.656278][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3036.656282][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3036.656285][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3036.656289][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3036.656294][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3036.656298][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3036.656302][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3036.656306][    C0] RIP: 0033:0x7f439756d93b
[ 3036.656309][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3036.656312][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3036.656315][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3036.656317][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3036.656319][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3036.656321][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3036.656323][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3040.669121][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3040.669126][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3040.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 3040.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 3040.669140][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3040.669141][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3040.669146][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3040.669149][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3040.669152][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3040.669154][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3040.669156][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3040.669158][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3040.669160][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3040.669162][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3040.669164][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3040.669168][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3040.669169][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3040.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3040.669173][    C2] PKRU: 55555554
[ 3040.669174][    C2] Call Trace:
[ 3040.669176][    C2]  <TASK>
[ 3040.669178][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3040.669182][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3040.669186][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3040.669189][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3040.669194][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3040.669197][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3040.669200][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3040.669203][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3040.669208][ C2] xa_store (lib/xarray.c:1734) 
[ 3040.669212][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3040.669215][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3040.669220][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3040.669223][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3040.669226][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3040.669230][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3040.669233][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3040.669239][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3040.669243][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3040.669247][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3040.669251][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3040.669256][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3040.669262][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3040.669266][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3040.669270][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3040.669274][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3040.669278][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3040.669282][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3040.669284][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3040.669288][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3040.669293][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3040.669297][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3040.669301][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3040.669305][    C2] RIP: 0033:0x7f439756d93b
[ 3040.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3040.669310][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3040.669313][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3040.669316][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3040.669318][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3040.669320][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3040.669321][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3052.669119][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3052.669124][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3052.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 3052.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 3052.669138][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3052.669140][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:89 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3052.669145][ C1] Code: 11 80 38 00 74 ef 4d 8d 1c 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea eb 09 <48> 83 c0 01 48 39 d0 74 a5 80 38 00 74 f2 e9 74 ff ff ff b8 01 00
All code
========
   0:	11 80 38 00 74 ef    	adc    %eax,-0x108bffc8(%rax)
   6:	4d 8d 1c 2c          	lea    (%r12,%rbp,1),%r11
   a:	48 89 c2             	mov    %rax,%rdx
   d:	48 85 c0             	test   %rax,%rax
  10:	75 b0                	jne    0xffffffffffffffc2
  12:	48 89 da             	mov    %rbx,%rdx
  15:	4c 89 d8             	mov    %r11,%rax
  18:	4c 29 da             	sub    %r11,%rdx
  1b:	e9 49 ff ff ff       	jmp    0xffffffffffffff69
  20:	48 85 d2             	test   %rdx,%rdx
  23:	74 b3                	je     0xffffffffffffffd8
  25:	48 01 ea             	add    %rbp,%rdx
  28:	eb 09                	jmp    0x33
  2a:*	48 83 c0 01          	add    $0x1,%rax		<-- trapping instruction
  2e:	48 39 d0             	cmp    %rdx,%rax
  31:	74 a5                	je     0xffffffffffffffd8
  33:	80 38 00             	cmpb   $0x0,(%rax)
  36:	74 f2                	je     0x2a
  38:	e9 74 ff ff ff       	jmp    0xffffffffffffffb1
  3d:	b8                   	.byte 0xb8
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	48 83 c0 01          	add    $0x1,%rax
   4:	48 39 d0             	cmp    %rdx,%rax
   7:	74 a5                	je     0xffffffffffffffae
   9:	80 38 00             	cmpb   $0x0,(%rax)
   c:	74 f2                	je     0x0
   e:	e9 74 ff ff ff       	jmp    0xffffffffffffff87
  13:	b8                   	.byte 0xb8
  14:	01 00                	add    %eax,(%rax)
[ 3052.669147][    C1] RSP: 0018:ffffc900034b79f8 EFLAGS: 00000246
[ 3052.669150][    C1] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 3052.669152][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3052.669154][    C1] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3052.669156][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3052.669158][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3052.669160][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3052.669163][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3052.669166][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3052.669168][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3052.669169][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3052.669171][    C1] PKRU: 55555554
[ 3052.669173][    C1] Call Trace:
[ 3052.669174][    C1]  <TASK>
[ 3052.669177][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3052.669182][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3052.669185][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3052.669189][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3052.669192][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3052.669198][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3052.669201][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3052.669204][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3052.669207][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3052.669212][ C1] xa_store (lib/xarray.c:1734) 
[ 3052.669216][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3052.669219][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3052.669224][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3052.669227][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3052.669230][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3052.669234][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3052.669238][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3052.669243][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3052.669247][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3052.669252][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3052.669256][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3052.669260][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3052.669266][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3052.669270][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3052.669274][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3052.669278][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3052.669282][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3052.669285][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3052.669288][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3052.669292][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3052.669297][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3052.669301][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3052.669305][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3052.669308][    C1] RIP: 0033:0x7f439756d93b
[ 3052.669311][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3052.669313][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3052.669316][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3052.669318][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3052.669320][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3052.669322][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3052.669324][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3052.670151][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3052.670160][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3052.670164][ C3] softirqs last disabled at (0): 0x0 
| [ 3052.670175][    C3] Tainted: [L]=SOFTLOCKUP
[ 3052.670177][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3052.670179][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3052.670187][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3052.670191][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3052.670194][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3052.670196][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3052.670199][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3052.670201][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3052.670203][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3052.670205][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3052.670207][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3052.670212][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3052.670214][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3052.670216][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3052.670217][    C3] PKRU: 55555554
[ 3052.670219][    C3] Call Trace:
[ 3052.670223][    C3]  <IRQ>
[ 3052.670225][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3052.670231][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3052.670237][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3052.670240][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3052.670246][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3052.670250][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3052.670254][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3052.670258][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3052.670261][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3052.670264][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3052.670268][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3052.670270][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3052.670273][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3052.670279][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3052.670284][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3052.670287][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3052.670291][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3052.670296][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3052.670300][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3052.670306][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3052.670311][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3052.670317][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3052.670323][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3052.670326][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3052.670329][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3052.670333][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3052.670336][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3052.670339][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3052.670345][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3052.670347][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3052.670350][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3052.670355][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3052.670359][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3052.670363][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3052.670365][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3052.670369][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3052.670373][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3052.670377][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3052.670381][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3052.670385][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3052.670390][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3052.670394][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3052.670397][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3052.670402][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3052.670406][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3052.670413][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3052.670417][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3052.670420][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3052.670424][    C3]  </IRQ>
[ 3052.670425][    C3]  <TASK>
[ 3052.670427][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3052.670432][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3052.670436][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3052.670439][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3052.670443][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3052.670445][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3052.670447][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3052.670449][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3052.670451][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3052.670455][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3052.670461][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3052.670467][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3052.670470][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3052.670475][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3052.670478][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3052.670482][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3052.670485][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3052.670490][ C3] xas_alloc (lib/xarray.c:378) 
[ 3052.670495][ C3] xas_create (lib/xarray.c:685) 
[ 3052.670501][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3052.670506][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3052.670509][ C3] __xa_store (lib/xarray.c:1703) 
[ 3052.670513][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3052.670518][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3052.670521][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3052.670524][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3052.670529][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3052.670533][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3052.670536][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3052.670541][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3052.670544][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3052.670546][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3052.670551][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3052.670554][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3052.670559][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3052.670562][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3052.670567][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3052.670571][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3052.670576][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3052.670584][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3052.670588][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3052.670593][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3052.670597][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3052.670601][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3052.670604][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3052.670607][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3052.670610][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3052.670617][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3052.670621][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3052.670626][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3052.670629][    C3] RIP: 0033:0x7f439756d93b
[ 3052.670634][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3052.670637][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3052.670640][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3052.670642][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3052.670644][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3052.670646][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3052.670648][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3064.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3064.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3064.656129][ C0] softirqs last disabled at (0): 0x0 
| [ 3064.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 3064.656139][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3064.656141][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3064.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3064.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3064.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3064.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3064.656155][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3064.656157][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3064.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3064.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3064.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3064.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3064.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3064.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3064.656172][    C0] PKRU: 55555554
[ 3064.656173][    C0] Call Trace:
[ 3064.656175][    C0]  <TASK>
[ 3064.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3064.656181][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3064.656184][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3064.656188][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3064.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3064.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3064.656198][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3064.656201][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3064.656206][ C0] xa_store (lib/xarray.c:1734) 
[ 3064.656210][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3064.656213][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3064.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3064.656221][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3064.656224][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3064.656228][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3064.656232][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3064.656237][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3064.656241][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3064.656245][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3064.656249][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3064.656254][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3064.656260][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3064.656264][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3064.656269][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3064.656273][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3064.656276][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3064.656280][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3064.656283][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3064.656287][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3064.656292][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3064.656296][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3064.656300][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3064.656304][    C0] RIP: 0033:0x7f439756d93b
[ 3064.656306][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3064.656309][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3064.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3064.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3064.656315][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3064.656318][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3064.656319][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3068.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3068.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3068.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 3068.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 3068.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3068.669141][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 3068.669146][ C2] Code: 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 7b 44 8d ff       	jmp    0xffffffffff8d4482
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 3068.669149][    C2] RSP: 0018:ffffc900034d7a10 EFLAGS: 00000202
[ 3068.669152][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3068.669154][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3068.669156][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3068.669158][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3068.669160][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3068.669162][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3068.669165][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3068.669168][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3068.669170][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3068.669172][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3068.669173][    C2] PKRU: 55555554
[ 3068.669174][    C2] Call Trace:
[ 3068.669176][    C2]  <TASK>
[ 3068.669177][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3068.669183][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3068.669186][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3068.669191][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3068.669194][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3068.669199][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3068.669202][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3068.669204][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3068.669207][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3068.669212][ C2] xa_store (lib/xarray.c:1734) 
[ 3068.669216][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3068.669220][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3068.669225][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3068.669228][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3068.669230][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3068.669235][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3068.669238][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3068.669244][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3068.669248][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3068.669252][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3068.669256][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3068.669260][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3068.669267][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3068.669270][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3068.669275][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3068.669279][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3068.669282][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3068.669286][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3068.669289][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3068.669292][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3068.669297][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3068.669301][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3068.669305][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3068.669308][    C2] RIP: 0033:0x7f439756d93b
[ 3068.669311][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3068.669314][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3068.669317][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3068.669319][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3068.669321][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3068.669323][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3068.669325][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3076.437169][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 3076.437605][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 3076.437845][    C1] NMI backtrace for cpu 1
| [ 3076.437855][    C1] Tainted: [L]=SOFTLOCKUP
[ 3076.437856][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3076.437858][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3076.437864][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3076.437867][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3076.437870][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3076.437872][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3076.437874][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3076.437877][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3076.437879][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3076.437880][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3076.437883][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3076.437886][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3076.437888][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3076.437889][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3076.437891][    C1] PKRU: 55555554
[ 3076.437893][    C1] Call Trace:
[ 3076.437895][    C1]  <TASK>
[ 3076.437897][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3076.437901][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3076.437905][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3076.437908][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3076.437913][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3076.437916][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3076.437919][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3076.437922][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3076.437927][ C1] xa_store (lib/xarray.c:1734) 
[ 3076.437931][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3076.437934][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3076.437939][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3076.437942][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3076.437944][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3076.437949][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3076.437952][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3076.437957][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3076.437961][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3076.437966][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3076.437970][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3076.437974][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3076.437980][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3076.437984][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3076.437988][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3076.437993][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3076.437996][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3076.438000][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3076.438002][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3076.438006][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3076.438011][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3076.438015][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3076.438019][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3076.438022][    C1] RIP: 0033:0x7f439756d93b
[ 3076.438025][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3076.438028][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3076.438031][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3076.438033][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3076.438035][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3076.438037][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3076.438039][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3076.438037][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 3076.438039][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3076.438045][    C1]  </TASK>
| [ 3076.438851][    C3] Tainted: [L]=SOFTLOCKUP
[ 3076.438852][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3076.438854][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3076.438859][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3076.438863][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3076.438866][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3076.438868][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3076.438870][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3076.438872][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3076.438874][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3076.438876][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3076.438878][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3076.438882][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3076.438884][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3076.438886][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3076.438888][    C3] PKRU: 55555554
[ 3076.438889][    C3] Call Trace:
[ 3076.438890][    C3]  <IRQ>
[ 3076.438892][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3076.438897][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3076.438901][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3076.438904][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3076.438907][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3076.438912][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3076.438915][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3076.438920][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3076.438922][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3076.438925][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3076.438928][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3076.438931][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3076.438933][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3076.438939][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3076.438942][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3076.438945][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3076.438948][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3076.438953][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3076.438957][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3076.438962][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3076.438966][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3076.438972][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3076.438977][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3076.438980][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3076.438983][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3076.438986][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3076.438989][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3076.438992][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3076.438998][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3076.439001][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3076.439004][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3076.439009][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3076.439013][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3076.439017][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3076.439020][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3076.439023][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3076.439027][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3076.439031][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3076.439035][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3076.439038][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3076.439043][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3076.439047][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3076.439050][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3076.439055][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3076.439059][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3076.439064][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3076.439067][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3076.439070][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3076.439074][    C3]  </IRQ>
[ 3076.439075][    C3]  <TASK>
[ 3076.439076][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3076.439080][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3076.439083][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3076.439086][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3076.439088][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3076.439090][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3076.439092][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3076.439093][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3076.439095][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3076.439099][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3076.439105][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3076.439110][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3076.439114][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3076.439118][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3076.439121][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3076.439125][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3076.439128][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3076.439132][ C3] xas_alloc (lib/xarray.c:378) 
[ 3076.439137][ C3] xas_create (lib/xarray.c:685) 
[ 3076.439142][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3076.439147][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3076.439150][ C3] __xa_store (lib/xarray.c:1703) 
[ 3076.439154][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3076.439159][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3076.439161][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3076.439164][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3076.439169][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3076.439173][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3076.439176][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3076.439181][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3076.439183][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3076.439186][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3076.439190][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3076.439193][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3076.439198][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3076.439202][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3076.439206][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3076.439210][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3076.439214][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3076.439220][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3076.439224][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3076.439229][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3076.439234][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3076.439237][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3076.439241][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3076.439243][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3076.439246][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3076.439253][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3076.439256][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3076.439261][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3076.439263][    C3] RIP: 0033:0x7f439756d93b
[ 3076.439268][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3076.439270][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3076.439273][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3076.439275][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3076.439277][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3076.439278][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3076.439280][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3092.656121][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3092.656126][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3092.656130][ C0] softirqs last disabled at (0): 0x0 
| [ 3092.656140][    C0] Tainted: [L]=SOFTLOCKUP
[ 3092.656141][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3092.656143][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3092.656148][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3092.656151][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3092.656154][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3092.656156][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3092.656158][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3092.656160][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3092.656162][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3092.656164][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3092.656166][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3092.656169][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3092.656171][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3092.656173][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3092.656174][    C0] PKRU: 55555554
[ 3092.656176][    C0] Call Trace:
[ 3092.656178][    C0]  <TASK>
[ 3092.656181][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3092.656184][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3092.656188][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3092.656192][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3092.656197][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3092.656200][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3092.656203][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3092.656206][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3092.656212][ C0] xa_store (lib/xarray.c:1734) 
[ 3092.656216][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3092.656219][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3092.656224][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3092.656227][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3092.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3092.656234][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3092.656237][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3092.656243][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3092.656247][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3092.656251][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3092.656255][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3092.656260][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3092.656266][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3092.656270][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3092.656274][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3092.656279][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3092.656282][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3092.656286][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3092.656289][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3092.656293][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3092.656298][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3092.656302][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3092.656306][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3092.656310][    C0] RIP: 0033:0x7f439756d93b
[ 3092.656313][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3092.656316][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3092.656319][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3092.656321][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3092.656323][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3092.656325][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3092.656327][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3096.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3096.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3096.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 3096.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 3096.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3096.669141][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3096.669146][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3096.669150][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3096.669152][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3096.669154][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3096.669157][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3096.669158][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3096.669161][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3096.669163][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3096.669165][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3096.669168][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3096.669170][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3096.669172][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3096.669173][    C2] PKRU: 55555554
[ 3096.669175][    C2] Call Trace:
[ 3096.669177][    C2]  <TASK>
[ 3096.669179][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3096.669183][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3096.669187][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3096.669190][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3096.669195][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3096.669198][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3096.669201][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3096.669204][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3096.669209][ C2] xa_store (lib/xarray.c:1734) 
[ 3096.669213][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3096.669216][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3096.669221][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3096.669224][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3096.669227][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3096.669231][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3096.669235][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3096.669240][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3096.669244][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3096.669248][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3096.669252][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3096.669257][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3096.669263][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3096.669267][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3096.669271][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3096.669275][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3096.669279][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3096.669282][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3096.669285][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3096.669289][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3096.669294][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3096.669298][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3096.669302][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3096.669305][    C2] RIP: 0033:0x7f439756d93b
[ 3096.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3096.669311][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3096.669314][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3096.669316][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3096.669318][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3096.669320][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3096.669322][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3100.669119][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3100.669124][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3100.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 3100.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 3100.669138][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3100.669140][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3100.669145][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3100.669148][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3100.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3100.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3100.669155][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3100.669157][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3100.669159][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3100.669161][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3100.669163][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3100.669167][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3100.669169][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3100.669170][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3100.669172][    C1] PKRU: 55555554
[ 3100.669174][    C1] Call Trace:
[ 3100.669175][    C1]  <TASK>
[ 3100.669177][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3100.669181][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3100.669185][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3100.669188][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3100.669193][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3100.669196][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3100.669198][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3100.669201][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3100.669206][ C1] xa_store (lib/xarray.c:1734) 
[ 3100.669210][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3100.669213][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3100.669218][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3100.669221][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3100.669223][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3100.669228][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3100.669231][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3100.669236][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3100.669240][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3100.669245][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3100.669248][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3100.669253][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3100.669259][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3100.669262][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3100.669266][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3100.669271][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3100.669274][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3100.669278][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3100.669281][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3100.669284][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3100.669290][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3100.669294][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3100.669298][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3100.669301][    C1] RIP: 0033:0x7f439756d93b
[ 3100.669303][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3100.669307][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3100.669310][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3100.669312][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3100.669314][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3100.669316][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3100.669318][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3100.670162][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3100.670170][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3100.670174][ C3] softirqs last disabled at (0): 0x0 
| [ 3100.670187][    C3] Tainted: [L]=SOFTLOCKUP
[ 3100.670188][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3100.670191][ C3] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3100.670198][ C3] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 3100.670201][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3100.670204][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3100.670206][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3100.670208][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3100.670210][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3100.670212][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3100.670214][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3100.670216][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3100.670220][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3100.670222][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3100.670224][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3100.670225][    C3] PKRU: 55555554
[ 3100.670227][    C3] Call Trace:
[ 3100.670230][    C3]  <IRQ>
[ 3100.670232][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3100.670238][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3100.670243][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3100.670246][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3100.670251][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3100.670256][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3100.670259][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3100.670263][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3100.670266][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3100.670269][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3100.670272][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3100.670275][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3100.670278][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3100.670283][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3100.670288][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3100.670290][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3100.670294][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3100.670300][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3100.670304][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3100.670309][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3100.670314][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3100.670320][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3100.670326][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3100.670329][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3100.670332][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3100.670335][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3100.670339][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3100.670342][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3100.670349][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3100.670352][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3100.670355][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3100.670359][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3100.670363][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3100.670367][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3100.670369][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3100.670373][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3100.670376][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3100.670381][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3100.670386][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3100.670389][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3100.670394][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3100.670398][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3100.670402][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3100.670407][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3100.670411][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3100.670417][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3100.670420][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3100.670424][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3100.670428][    C3]  </IRQ>
[ 3100.670429][    C3]  <TASK>
[ 3100.670430][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3100.670436][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3100.670439][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3100.670442][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3100.670445][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3100.670447][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3100.670449][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3100.670451][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3100.670453][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3100.670457][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3100.670463][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3100.670468][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3100.670472][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3100.670477][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3100.670480][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3100.670484][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3100.670487][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3100.670492][ C3] xas_alloc (lib/xarray.c:378) 
[ 3100.670497][ C3] xas_create (lib/xarray.c:685) 
[ 3100.670503][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3100.670508][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3100.670512][ C3] __xa_store (lib/xarray.c:1703) 
[ 3100.670516][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3100.670520][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3100.670523][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3100.670526][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3100.670531][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3100.670535][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3100.670538][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3100.670543][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3100.670546][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3100.670549][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3100.670553][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3100.670556][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3100.670561][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3100.670564][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3100.670569][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3100.670573][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3100.670578][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3100.670586][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3100.670590][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3100.670595][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3100.670599][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3100.670602][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3100.670606][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3100.670608][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3100.670612][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3100.670618][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3100.670622][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3100.670626][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3100.670630][    C3] RIP: 0033:0x7f439756d93b
[ 3100.670634][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3100.670637][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3100.670639][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3100.670642][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3100.670644][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3100.670645][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3100.670647][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3120.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3120.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3120.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 3120.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 3120.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3120.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3120.656144][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3120.656147][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3120.656149][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3120.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3120.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3120.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3120.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3120.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3120.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3120.656165][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3120.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3120.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3120.656171][    C0] PKRU: 55555554
[ 3120.656172][    C0] Call Trace:
[ 3120.656174][    C0]  <TASK>
[ 3120.656176][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3120.656179][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3120.656183][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3120.656186][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3120.656191][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3120.656194][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3120.656197][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3120.656200][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3120.656205][ C0] xa_store (lib/xarray.c:1734) 
[ 3120.656209][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3120.656212][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3120.656217][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3120.656220][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3120.656223][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3120.656227][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3120.656231][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3120.656236][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3120.656240][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3120.656244][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3120.656249][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3120.656253][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3120.656260][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3120.656264][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3120.656268][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3120.656272][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3120.656275][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3120.656279][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3120.656282][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3120.656286][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3120.656291][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3120.656294][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3120.656299][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3120.656302][    C0] RIP: 0033:0x7f439756d93b
[ 3120.656306][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3120.656308][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3120.656311][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3120.656313][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3120.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3120.656317][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3120.656319][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3124.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3124.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3124.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3124.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 3124.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3124.669140][ C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 3124.669146][ C2] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 3124.669149][    C2] RSP: 0018:ffffc900034d7a10 EFLAGS: 00000202
[ 3124.669151][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3124.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3124.669155][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3124.669157][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3124.669159][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3124.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3124.669164][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3124.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3124.669169][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3124.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3124.669172][    C2] PKRU: 55555554
[ 3124.669174][    C2] Call Trace:
[ 3124.669175][    C2]  <TASK>
[ 3124.669177][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3124.669182][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3124.669186][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3124.669190][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3124.669193][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3124.669198][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3124.669201][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3124.669204][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3124.669207][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3124.669212][ C2] xa_store (lib/xarray.c:1734) 
[ 3124.669216][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3124.669220][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3124.669225][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3124.669227][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3124.669230][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3124.669234][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3124.669238][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3124.669243][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3124.669247][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3124.669252][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3124.669256][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3124.669260][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3124.669267][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3124.669270][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3124.669275][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3124.669279][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3124.669282][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3124.669286][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3124.669289][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3124.669292][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3124.669298][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3124.669301][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3124.669306][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3124.669309][    C2] RIP: 0033:0x7f439756d93b
[ 3124.669312][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3124.669315][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3124.669318][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3124.669320][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3124.669322][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3124.669324][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3124.669326][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3128.669119][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3128.669124][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3128.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 3128.669136][    C1] Tainted: [L]=SOFTLOCKUP
[ 3128.669138][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3128.669140][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 3128.669144][ C1] Code: 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff <5b> b8 01 00 00 00 5d 41 5c c3 cc cc cc cc 41 bc 08 00 00 00 45 29
All code
========
   0:	00 74 f2 48          	add    %dh,0x48(%rdx,%rsi,8)
   4:	89 c2                	mov    %eax,%edx
   6:	b8 01 00 00 00       	mov    $0x1,%eax
   b:	48 85 d2             	test   %rdx,%rdx
   e:	0f 84 4c ff ff ff    	je     0xffffffffffffff60
  14:	41 83 e2 07          	and    $0x7,%r10d
  18:	49 39 d1             	cmp    %rdx,%r9
  1b:	0f 85 34 ff ff ff    	jne    0xffffffffffffff55
  21:	45 3a 11             	cmp    (%r9),%r10b
  24:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff55
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	b8 01 00 00 00       	mov    $0x1,%eax
  30:	5d                   	pop    %rbp
  31:	41 5c                	pop    %r12
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  3e:	45                   	rex.RB
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	b8 01 00 00 00       	mov    $0x1,%eax
   6:	5d                   	pop    %rbp
   7:	41 5c                	pop    %r12
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  14:	45                   	rex.RB
  15:	29                   	.byte 0x29
[ 3128.669147][    C1] RSP: 0018:ffffc900034b79f8 EFLAGS: 00000246
[ 3128.669149][    C1] RAX: fffffbfff77dcb81 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 3128.669152][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3128.669154][    C1] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3128.669155][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3128.669158][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3128.669159][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3128.669162][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3128.669165][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3128.669167][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3128.669168][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3128.669170][    C1] PKRU: 55555554
[ 3128.669171][    C1] Call Trace:
[ 3128.669173][    C1]  <TASK>
[ 3128.669175][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3128.669180][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3128.669184][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3128.669187][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3128.669190][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3128.669195][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3128.669198][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3128.669201][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3128.669204][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3128.669209][ C1] xa_store (lib/xarray.c:1734) 
[ 3128.669213][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3128.669216][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3128.669221][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3128.669224][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3128.669227][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3128.669231][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3128.669235][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3128.669240][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3128.669244][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3128.669248][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3128.669253][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3128.669257][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3128.669263][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3128.669267][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3128.669271][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3128.669275][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3128.669279][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3128.669282][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3128.669285][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3128.669289][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3128.669294][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3128.669298][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3128.669302][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3128.669305][    C1] RIP: 0033:0x7f439756d93b
[ 3128.669308][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3128.669311][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3128.669314][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3128.669316][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3128.669318][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3128.669320][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3128.669322][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3128.670151][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3128.670160][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3128.670163][ C3] softirqs last disabled at (0): 0x0 
| [ 3128.670176][    C3] Tainted: [L]=SOFTLOCKUP
[ 3128.670177][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3128.670180][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3128.670188][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3128.670191][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3128.670194][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3128.670196][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3128.670198][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3128.670200][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3128.670202][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3128.670204][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3128.670206][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3128.670210][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3128.670212][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3128.670214][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3128.670215][    C3] PKRU: 55555554
[ 3128.670217][    C3] Call Trace:
[ 3128.670220][    C3]  <IRQ>
[ 3128.670222][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3128.670228][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3128.670233][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3128.670236][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3128.670241][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3128.670246][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3128.670249][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3128.670253][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3128.670257][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3128.670260][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3128.670262][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3128.670265][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3128.670268][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3128.670273][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3128.670278][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3128.670281][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3128.670285][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3128.670290][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3128.670294][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3128.670300][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3128.670305][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3128.670311][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3128.670316][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3128.670319][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3128.670323][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3128.670326][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3128.670329][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3128.670332][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3128.670338][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3128.670341][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3128.670344][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3128.670348][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3128.670352][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3128.670356][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3128.670359][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3128.670362][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3128.670365][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3128.670370][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3128.670374][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3128.670377][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3128.670383][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3128.670387][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3128.670390][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3128.670395][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3128.670400][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3128.670406][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3128.670410][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3128.670413][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3128.670417][    C3]  </IRQ>
[ 3128.670418][    C3]  <TASK>
[ 3128.670420][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3128.670424][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3128.670428][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3128.670430][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3128.670433][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3128.670435][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3128.670437][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3128.670440][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3128.670442][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3128.670446][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3128.670451][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3128.670457][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3128.670461][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3128.670465][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3128.670468][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3128.670472][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3128.670475][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3128.670480][ C3] xas_alloc (lib/xarray.c:378) 
[ 3128.670485][ C3] xas_create (lib/xarray.c:685) 
[ 3128.670491][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3128.670496][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3128.670499][ C3] __xa_store (lib/xarray.c:1703) 
[ 3128.670504][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3128.670508][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3128.670511][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3128.670514][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3128.670519][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3128.670523][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3128.670526][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3128.670531][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3128.670533][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3128.670536][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3128.670541][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3128.670544][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3128.670549][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3128.670553][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3128.670558][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3128.670562][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3128.670566][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3128.670574][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3128.670578][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3128.670584][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3128.670588][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3128.670592][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3128.670595][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3128.670598][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3128.670601][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3128.670607][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3128.670611][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3128.670616][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3128.670620][    C3] RIP: 0033:0x7f439756d93b
[ 3128.670624][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3128.670627][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3128.670630][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3128.670632][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3128.670634][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3128.670636][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3128.670638][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3148.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3148.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3148.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 3148.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 3148.656139][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3148.656141][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3148.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3148.656149][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3148.656151][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3148.656153][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3148.656155][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3148.656157][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3148.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3148.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3148.656164][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3148.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3148.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3148.656171][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3148.656172][    C0] PKRU: 55555554
[ 3148.656173][    C0] Call Trace:
[ 3148.656175][    C0]  <TASK>
[ 3148.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3148.656181][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3148.656185][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3148.656188][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3148.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3148.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3148.656199][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3148.656202][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3148.656207][ C0] xa_store (lib/xarray.c:1734) 
[ 3148.656211][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3148.656214][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3148.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3148.656222][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3148.656225][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3148.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3148.656233][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3148.656238][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3148.656242][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3148.656246][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3148.656250][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3148.656254][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3148.656261][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3148.656264][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3148.656269][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3148.656273][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3148.656276][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3148.656280][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3148.656283][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3148.656286][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3148.656291][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3148.656295][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3148.656299][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3148.656303][    C0] RIP: 0033:0x7f439756d93b
[ 3148.656306][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3148.656309][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3148.656311][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3148.656313][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3148.656315][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3148.656317][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3148.656319][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3152.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3152.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3152.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3152.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 3152.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3152.669140][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:87 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3152.669144][ C2] Code: 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 a5 <80> 38 00 74 f2 e9 74 ff ff ff b8 01 00 00 00 e9 cb 80 38 02 48 29
All code
========
   0:	2c 48                	sub    $0x48,%al
   2:	89 c2                	mov    %eax,%edx
   4:	48 85 c0             	test   %rax,%rax
   7:	75 b0                	jne    0xffffffffffffffb9
   9:	48 89 da             	mov    %rbx,%rdx
   c:	4c 89 d8             	mov    %r11,%rax
   f:	4c 29 da             	sub    %r11,%rdx
  12:	e9 49 ff ff ff       	jmp    0xffffffffffffff60
  17:	48 85 d2             	test   %rdx,%rdx
  1a:	74 b3                	je     0xffffffffffffffcf
  1c:	48 01 ea             	add    %rbp,%rdx
  1f:	eb 09                	jmp    0x2a
  21:	48 83 c0 01          	add    $0x1,%rax
  25:	48 39 d0             	cmp    %rdx,%rax
  28:	74 a5                	je     0xffffffffffffffcf
  2a:*	80 38 00             	cmpb   $0x0,(%rax)		<-- trapping instruction
  2d:	74 f2                	je     0x21
  2f:	e9 74 ff ff ff       	jmp    0xffffffffffffffa8
  34:	b8 01 00 00 00       	mov    $0x1,%eax
  39:	e9 cb 80 38 02       	jmp    0x2388109
  3e:	48                   	rex.W
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	80 38 00             	cmpb   $0x0,(%rax)
   3:	74 f2                	je     0xfffffffffffffff7
   5:	e9 74 ff ff ff       	jmp    0xffffffffffffff7e
   a:	b8 01 00 00 00       	mov    $0x1,%eax
   f:	e9 cb 80 38 02       	jmp    0x23880df
  14:	48                   	rex.W
  15:	29                   	.byte 0x29
[ 3152.669147][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000286
[ 3152.669150][    C2] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 3152.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3152.669154][    C2] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3152.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3152.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3152.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3152.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3152.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3152.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3152.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3152.669171][    C2] PKRU: 55555554
[ 3152.669173][    C2] Call Trace:
[ 3152.669175][    C2]  <TASK>
[ 3152.669177][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3152.669182][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3152.669185][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3152.669189][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3152.669192][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3152.669197][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3152.669200][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3152.669203][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3152.669205][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3152.669211][ C2] xa_store (lib/xarray.c:1734) 
[ 3152.669215][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3152.669218][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3152.669223][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3152.669226][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3152.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3152.669234][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3152.669237][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3152.669242][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3152.669246][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3152.669251][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3152.669255][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3152.669259][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3152.669265][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3152.669269][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3152.669273][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3152.669278][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3152.669282][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3152.669285][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3152.669288][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3152.669291][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3152.669296][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3152.669300][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3152.669305][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3152.669308][    C2] RIP: 0033:0x7f439756d93b
[ 3152.669311][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3152.669313][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3152.669316][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3152.669318][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3152.669320][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3152.669322][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3152.669324][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3154.451532][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 3154.451809][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 3154.452205][    C1] NMI backtrace for cpu 1
| [ 3154.452215][    C1] Tainted: [L]=SOFTLOCKUP
[ 3154.452217][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3154.452218][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3154.452224][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3154.452227][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3154.452230][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3154.452232][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3154.452234][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3154.452236][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3154.452238][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3154.452240][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3154.452243][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3154.452246][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3154.452248][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3154.452249][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3154.452251][    C1] PKRU: 55555554
[ 3154.452252][    C1] Call Trace:
[ 3154.452254][    C1]  <TASK>
[ 3154.452256][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3154.452260][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3154.452263][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3154.452266][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3154.452271][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3154.452274][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3154.452277][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3154.452280][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3154.452285][ C1] xa_store (lib/xarray.c:1734) 
[ 3154.452289][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3154.452292][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3154.452297][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3154.452300][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3154.452303][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3154.452307][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3154.452310][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3154.452315][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3154.452319][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3154.452324][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3154.452328][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3154.452332][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3154.452338][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3154.452342][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3154.452346][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3154.452350][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3154.452354][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3154.452358][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3154.452360][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3154.452364][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3154.452369][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3154.452373][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3154.452377][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3154.452380][    C1] RIP: 0033:0x7f439756d93b
[ 3154.452383][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3154.452385][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3154.452388][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3154.452390][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3154.452392][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3154.452394][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3154.452396][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3154.452394][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 3154.452396][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3154.452402][    C1]  </TASK>
| [ 3154.453211][    C3] Tainted: [L]=SOFTLOCKUP
[ 3154.453212][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3154.453214][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3154.453219][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3154.453223][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3154.453226][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3154.453228][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3154.453230][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3154.453232][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3154.453234][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3154.453236][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3154.453238][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3154.453242][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3154.453245][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3154.453246][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3154.453248][    C3] PKRU: 55555554
[ 3154.453249][    C3] Call Trace:
[ 3154.453251][    C3]  <IRQ>
[ 3154.453252][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3154.453257][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3154.453261][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3154.453264][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3154.453267][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3154.453272][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3154.453275][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3154.453279][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3154.453282][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3154.453285][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3154.453288][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3154.453291][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3154.453294][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3154.453299][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3154.453303][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3154.453306][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3154.453309][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3154.453314][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3154.453318][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3154.453323][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3154.453327][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3154.453333][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3154.453338][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3154.453341][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3154.453344][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3154.453347][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3154.453350][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3154.453353][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3154.453358][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3154.453361][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3154.453364][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3154.453368][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3154.453372][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3154.453376][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3154.453378][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3154.453382][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3154.453385][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3154.453390][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3154.453394][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3154.453397][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3154.453402][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3154.453405][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3154.453409][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3154.453414][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3154.453417][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3154.453423][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3154.453427][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3154.453430][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3154.453433][    C3]  </IRQ>
[ 3154.453434][    C3]  <TASK>
[ 3154.453436][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3154.453440][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3154.453444][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3154.453446][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3154.453448][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3154.453450][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3154.453452][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3154.453454][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3154.453456][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3154.453460][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3154.453465][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3154.453470][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3154.453474][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3154.453478][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3154.453481][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3154.453485][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3154.453487][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3154.453492][ C3] xas_alloc (lib/xarray.c:378) 
[ 3154.453496][ C3] xas_create (lib/xarray.c:685) 
[ 3154.453502][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3154.453506][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3154.453510][ C3] __xa_store (lib/xarray.c:1703) 
[ 3154.453514][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3154.453518][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3154.453521][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3154.453524][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3154.453529][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3154.453533][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3154.453536][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3154.453540][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3154.453543][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3154.453546][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3154.453550][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3154.453553][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3154.453558][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3154.453561][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3154.453566][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3154.453569][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3154.453574][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3154.453580][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3154.453583][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3154.453589][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3154.453594][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3154.453597][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3154.453601][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3154.453603][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3154.453607][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3154.453613][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3154.453617][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3154.453621][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3154.453624][    C3] RIP: 0033:0x7f439756d93b
[ 3154.453628][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3154.453631][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3154.453634][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3154.453635][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3154.453637][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3154.453639][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3154.453640][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3176.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3176.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3176.656129][ C0] softirqs last disabled at (0): 0x0 
| [ 3176.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 3176.656139][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3176.656141][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3176.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3176.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3176.656151][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3176.656153][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3176.656155][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3176.656157][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3176.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3176.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3176.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3176.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3176.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3176.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3176.656172][    C0] PKRU: 55555554
[ 3176.656173][    C0] Call Trace:
[ 3176.656174][    C0]  <TASK>
[ 3176.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3176.656181][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3176.656184][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3176.656188][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3176.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3176.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3176.656198][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3176.656201][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3176.656206][ C0] xa_store (lib/xarray.c:1734) 
[ 3176.656210][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3176.656214][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3176.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3176.656222][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3176.656224][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3176.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3176.656232][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3176.656238][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3176.656242][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3176.656246][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3176.656251][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3176.656255][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3176.656262][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3176.656266][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3176.656270][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3176.656274][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3176.656277][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3176.656281][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3176.656284][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3176.656287][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3176.656293][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3176.656296][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3176.656301][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3176.656304][    C0] RIP: 0033:0x7f439756d93b
[ 3176.656307][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3176.656310][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3176.656313][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3176.656315][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3176.656317][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3176.656319][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3176.656321][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3180.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3180.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3180.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 3180.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 3180.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3180.669141][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 3180.669145][ C2] Code: 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff <5b> b8 01 00 00 00 5d 41 5c c3 cc cc cc cc 41 bc 08 00 00 00 45 29
All code
========
   0:	00 74 f2 48          	add    %dh,0x48(%rdx,%rsi,8)
   4:	89 c2                	mov    %eax,%edx
   6:	b8 01 00 00 00       	mov    $0x1,%eax
   b:	48 85 d2             	test   %rdx,%rdx
   e:	0f 84 4c ff ff ff    	je     0xffffffffffffff60
  14:	41 83 e2 07          	and    $0x7,%r10d
  18:	49 39 d1             	cmp    %rdx,%r9
  1b:	0f 85 34 ff ff ff    	jne    0xffffffffffffff55
  21:	45 3a 11             	cmp    (%r9),%r10b
  24:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff55
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	b8 01 00 00 00       	mov    $0x1,%eax
  30:	5d                   	pop    %rbp
  31:	41 5c                	pop    %r12
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  3e:	45                   	rex.RB
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	b8 01 00 00 00       	mov    $0x1,%eax
   6:	5d                   	pop    %rbp
   7:	41 5c                	pop    %r12
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  14:	45                   	rex.RB
  15:	29                   	.byte 0x29
[ 3180.669148][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000246
[ 3180.669150][    C2] RAX: fffffbfff77dcb81 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 3180.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3180.669155][    C2] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3180.669157][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3180.669159][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3180.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3180.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3180.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3180.669169][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3180.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3180.669172][    C2] PKRU: 55555554
[ 3180.669174][    C2] Call Trace:
[ 3180.669176][    C2]  <TASK>
[ 3180.669178][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3180.669184][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3180.669187][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3180.669191][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3180.669194][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3180.669199][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3180.669202][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3180.669205][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3180.669208][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3180.669213][ C2] xa_store (lib/xarray.c:1734) 
[ 3180.669217][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3180.669220][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3180.669225][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3180.669228][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3180.669231][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3180.669235][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3180.669239][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3180.669244][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3180.669248][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3180.669252][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3180.669256][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3180.669260][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3180.669267][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3180.669270][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3180.669275][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3180.669279][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3180.669282][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3180.669286][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3180.669289][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3180.669293][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3180.669298][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3180.669302][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3180.669306][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3180.669309][    C2] RIP: 0033:0x7f439756d93b
[ 3180.669312][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3180.669315][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3180.669318][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3180.669320][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3180.669322][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3180.669324][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3180.669326][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3180.669352][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3180.669357][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3180.669361][ C1] softirqs last disabled at (0): 0x0 
| [ 3180.669369][    C1] Tainted: [L]=SOFTLOCKUP
[ 3180.669371][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3180.669372][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3180.669377][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3180.669380][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3180.669383][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3180.669385][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3180.669387][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3180.669388][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3180.669391][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3180.669392][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3180.669395][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3180.669398][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3180.669400][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3180.669401][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3180.669403][    C1] PKRU: 55555554
[ 3180.669404][    C1] Call Trace:
[ 3180.669406][    C1]  <TASK>
[ 3180.669408][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3180.669411][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3180.669415][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3180.669418][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3180.669423][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3180.669426][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3180.669429][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3180.669432][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3180.669437][ C1] xa_store (lib/xarray.c:1734) 
[ 3180.669440][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3180.669444][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3180.669449][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3180.669452][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3180.669455][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3180.669459][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3180.669463][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3180.669468][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3180.669471][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3180.669476][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3180.669480][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3180.669484][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3180.669491][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3180.669494][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3180.669499][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3180.669503][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3180.669506][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3180.669510][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3180.669512][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3180.669516][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3180.669521][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3180.669525][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3180.669530][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3180.669533][    C1] RIP: 0033:0x7f439756d93b
[ 3180.669535][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3180.669538][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3180.669541][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3180.669543][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3180.669545][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3180.669547][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3180.669549][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3180.670153][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3180.670160][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3180.670165][ C3] softirqs last disabled at (0): 0x0 
| [ 3180.670177][    C3] Tainted: [L]=SOFTLOCKUP
[ 3180.670178][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3180.670181][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3180.670188][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3180.670191][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3180.670194][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3180.670197][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3180.670199][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3180.670201][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3180.670203][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3180.670205][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3180.670208][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3180.670211][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3180.670213][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3180.670215][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3180.670216][    C3] PKRU: 55555554
[ 3180.670218][    C3] Call Trace:
[ 3180.670222][    C3]  <IRQ>
[ 3180.670224][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3180.670230][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3180.670235][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3180.670238][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3180.670243][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3180.670248][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3180.670252][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3180.670256][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3180.670259][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3180.670262][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3180.670265][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3180.670268][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3180.670270][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3180.670276][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3180.670280][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3180.670283][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3180.670287][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3180.670293][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3180.670297][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3180.670302][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3180.670307][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3180.670313][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3180.670318][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3180.670321][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3180.670325][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3180.670328][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3180.670331][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3180.670334][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3180.670341][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3180.670344][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3180.670347][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3180.670352][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3180.670356][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3180.670360][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3180.670363][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3180.670367][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3180.670370][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3180.670374][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3180.670379][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3180.670382][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3180.670388][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3180.670391][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3180.670395][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3180.670401][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3180.670405][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3180.670411][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3180.670415][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3180.670418][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3180.670422][    C3]  </IRQ>
[ 3180.670423][    C3]  <TASK>
[ 3180.670425][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3180.670430][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3180.670434][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3180.670437][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3180.670440][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3180.670442][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3180.670444][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3180.670446][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3180.670448][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3180.670452][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3180.670458][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3180.670464][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3180.670468][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3180.670472][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3180.670475][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3180.670480][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3180.670483][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3180.670488][ C3] xas_alloc (lib/xarray.c:378) 
[ 3180.670493][ C3] xas_create (lib/xarray.c:685) 
[ 3180.670499][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3180.670503][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3180.670507][ C3] __xa_store (lib/xarray.c:1703) 
[ 3180.670511][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3180.670516][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3180.670519][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3180.670522][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3180.670527][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3180.670530][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3180.670534][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3180.670538][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3180.670542][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3180.670544][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3180.670548][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3180.670551][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3180.670556][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3180.670560][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3180.670565][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3180.670569][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3180.670574][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3180.670582][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3180.670585][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3180.670591][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3180.670596][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3180.670599][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3180.670603][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3180.670605][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3180.670609][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3180.670615][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3180.670620][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3180.670624][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3180.670628][    C3] RIP: 0033:0x7f439756d93b
[ 3180.670632][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3180.670634][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3180.670637][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3180.670639][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3180.670641][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3180.670643][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3180.670645][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3204.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3204.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3204.656129][ C0] softirqs last disabled at (0): 0x0 
| [ 3204.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 3204.656139][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3204.656141][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3204.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3204.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3204.656151][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3204.656153][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3204.656155][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3204.656157][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3204.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3204.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3204.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3204.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3204.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3204.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3204.656172][    C0] PKRU: 55555554
[ 3204.656173][    C0] Call Trace:
[ 3204.656175][    C0]  <TASK>
[ 3204.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3204.656181][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3204.656184][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3204.656187][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3204.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3204.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3204.656199][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3204.656202][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3204.656207][ C0] xa_store (lib/xarray.c:1734) 
[ 3204.656211][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3204.656214][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3204.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3204.656222][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3204.656225][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3204.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3204.656233][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3204.656238][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3204.656242][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3204.656247][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3204.656251][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3204.656255][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3204.656262][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3204.656266][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3204.656270][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3204.656274][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3204.656278][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3204.656282][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3204.656284][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3204.656288][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3204.656294][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3204.656297][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3204.656302][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3204.656305][    C0] RIP: 0033:0x7f439756d93b
[ 3204.656308][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3204.656311][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3204.656313][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3204.656316][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3204.656318][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3204.656319][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3204.656321][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3208.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3208.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3208.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3208.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 3208.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3208.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3208.669144][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3208.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3208.669149][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3208.669151][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3208.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3208.669155][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3208.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3208.669159][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3208.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3208.669165][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3208.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3208.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3208.669170][    C2] PKRU: 55555554
[ 3208.669172][    C2] Call Trace:
[ 3208.669174][    C2]  <TASK>
[ 3208.669176][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3208.669180][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3208.669184][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3208.669187][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3208.669191][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3208.669194][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3208.669197][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3208.669200][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3208.669205][ C2] xa_store (lib/xarray.c:1734) 
[ 3208.669209][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3208.669213][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3208.669218][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3208.669221][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3208.669223][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3208.669228][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3208.669232][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3208.669237][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3208.669241][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3208.669245][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3208.669249][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3208.669254][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3208.669260][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3208.669264][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3208.669268][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3208.669272][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3208.669276][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3208.669280][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3208.669282][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3208.669286][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3208.669291][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3208.669295][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3208.669299][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3208.669302][    C2] RIP: 0033:0x7f439756d93b
[ 3208.669305][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3208.669308][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3208.669311][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3208.669313][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3208.669315][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3208.669317][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3208.669319][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3208.669346][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3208.669351][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3208.669354][ C1] softirqs last disabled at (0): 0x0 
| [ 3208.669363][    C1] Tainted: [L]=SOFTLOCKUP
[ 3208.669364][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3208.669366][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3208.669370][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3208.669373][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3208.669376][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3208.669378][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3208.669380][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3208.669382][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3208.669384][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3208.669386][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3208.669388][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3208.669391][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3208.669393][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3208.669395][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3208.669397][    C1] PKRU: 55555554
[ 3208.669398][    C1] Call Trace:
[ 3208.669399][    C1]  <TASK>
[ 3208.669401][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3208.669405][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3208.669409][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3208.669412][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3208.669417][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3208.669419][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3208.669422][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3208.669425][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3208.669430][ C1] xa_store (lib/xarray.c:1734) 
[ 3208.669434][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3208.669437][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3208.669443][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3208.669446][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3208.669449][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3208.669453][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3208.669457][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3208.669462][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3208.669465][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3208.669470][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3208.669475][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3208.669479][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3208.669485][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3208.669489][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3208.669493][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3208.669497][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3208.669501][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3208.669504][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3208.669507][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3208.669511][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3208.669516][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3208.669520][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3208.669524][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3208.669527][    C1] RIP: 0033:0x7f439756d93b
[ 3208.669530][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3208.669533][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3208.669535][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3208.669538][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3208.669539][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3208.669541][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3208.669543][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3208.670152][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3208.670161][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3208.670164][ C3] softirqs last disabled at (0): 0x0 
| [ 3208.670177][    C3] Tainted: [L]=SOFTLOCKUP
[ 3208.670179][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3208.670181][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:104 kernel/locking/qspinlock.c:141) 
[ 3208.670189][ C3] Code: c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44 24 40 <85> c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00 00 e8 60 b8 c7 fd be
All code
========
   0:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   4:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
   a:	48 89 ef             	mov    %rbp,%rdi
   d:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86f
  12:	41 0f b6 06          	movzbl (%r14),%eax
  16:	41 38 c5             	cmp    %al,%r13b
  19:	7c 08                	jl     0x23
  1b:	84 c0                	test   %al,%al
  1d:	0f 85 8d 07 00 00    	jne    0x7b0
  23:	8b 45 00             	mov    0x0(%rbp),%eax
  26:	89 44 24 40          	mov    %eax,0x40(%rsp)
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 6e 01 00 00    	jne    0x1a0
  32:	48 89 ef             	mov    %rbp,%rdi
  35:	be 04 00 00 00       	mov    $0x4,%esi
  3a:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b89f
  3f:	be                   	.byte 0xbe

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 6e 01 00 00    	jne    0x176
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	be 04 00 00 00       	mov    $0x4,%esi
  10:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b875
  15:	be                   	.byte 0xbe
[ 3208.670193][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000246
[ 3208.670196][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3208.670198][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3208.670200][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3208.670202][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3208.670205][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3208.670207][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3208.670209][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3208.670214][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3208.670216][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3208.670218][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3208.670219][    C3] PKRU: 55555554
[ 3208.670221][    C3] Call Trace:
[ 3208.670225][    C3]  <IRQ>
[ 3208.670227][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3208.670232][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3208.670238][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3208.670241][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3208.670246][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3208.670251][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3208.670254][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3208.670258][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3208.670261][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3208.670265][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3208.670268][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3208.670270][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3208.670273][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3208.670278][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3208.670283][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3208.670286][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3208.670290][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3208.670296][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3208.670300][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3208.670306][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3208.670310][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3208.670316][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3208.670322][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3208.670325][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3208.670329][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3208.670332][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3208.670336][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3208.670338][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3208.670345][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3208.670348][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3208.670351][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3208.670356][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3208.670360][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3208.670364][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3208.670366][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3208.670370][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3208.670374][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3208.670378][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3208.670383][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3208.670386][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3208.670392][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3208.670396][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3208.670399][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3208.670404][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3208.670409][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3208.670415][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3208.670419][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3208.670422][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3208.670426][    C3]  </IRQ>
[ 3208.670427][    C3]  <TASK>
[ 3208.670429][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3208.670434][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3208.670438][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3208.670441][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3208.670444][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3208.670446][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3208.670447][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3208.670450][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3208.670452][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3208.670457][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3208.670462][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3208.670468][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3208.670472][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3208.670477][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3208.670480][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3208.670484][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3208.670487][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3208.670492][ C3] xas_alloc (lib/xarray.c:378) 
[ 3208.670497][ C3] xas_create (lib/xarray.c:685) 
[ 3208.670503][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3208.670508][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3208.670511][ C3] __xa_store (lib/xarray.c:1703) 
[ 3208.670515][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3208.670520][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3208.670523][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3208.670526][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3208.670531][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3208.670535][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3208.670538][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3208.670543][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3208.670546][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3208.670549][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3208.670553][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3208.670557][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3208.670562][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3208.670566][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3208.670571][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3208.670575][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3208.670580][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3208.670589][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3208.670592][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3208.670597][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3208.670602][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3208.670605][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3208.670609][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3208.670612][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3208.670615][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3208.670622][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3208.670626][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3208.670631][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3208.670634][    C3] RIP: 0033:0x7f439756d93b
[ 3208.670639][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3208.670642][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3208.670645][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3208.670647][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3208.670649][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3208.670651][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3208.670653][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3232.465674][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 3232.465954][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 3232.466354][    C1] NMI backtrace for cpu 1
| [ 3232.466364][    C1] Tainted: [L]=SOFTLOCKUP
[ 3232.466365][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3232.466367][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3232.466372][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3232.466375][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3232.466378][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3232.466380][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3232.466382][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3232.466384][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3232.466386][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3232.466388][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3232.466390][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3232.466393][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3232.466395][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3232.466396][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3232.466398][    C1] PKRU: 55555554
[ 3232.466399][    C1] Call Trace:
[ 3232.466400][    C1]  <TASK>
[ 3232.466403][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3232.466406][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3232.466410][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3232.466413][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3232.466418][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3232.466422][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3232.466425][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3232.466428][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3232.466433][ C1] xa_store (lib/xarray.c:1734) 
[ 3232.466437][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3232.466440][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3232.466445][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3232.466448][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3232.466451][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3232.466455][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3232.466458][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3232.466463][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3232.466467][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3232.466472][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3232.466475][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3232.466479][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3232.466486][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3232.466489][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3232.466493][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3232.466498][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3232.466501][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3232.466505][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3232.466507][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3232.466511][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3232.466516][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3232.466520][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3232.466524][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3232.466527][    C1] RIP: 0033:0x7f439756d93b
[ 3232.466530][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3232.466532][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3232.466535][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3232.466537][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3232.466539][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3232.466541][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3232.466542][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3232.466541][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 3232.466542][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3232.466548][    C1]  </TASK>
| [ 3232.467360][    C3] Tainted: [L]=SOFTLOCKUP
[ 3232.467361][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3232.467363][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3232.467368][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3232.467372][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3232.467375][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3232.467377][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3232.467379][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3232.467381][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3232.467383][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3232.467385][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3232.467388][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3232.467392][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3232.467395][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3232.467396][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3232.467398][    C3] PKRU: 55555554
[ 3232.467399][    C3] Call Trace:
[ 3232.467401][    C3]  <IRQ>
[ 3232.467402][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3232.467407][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3232.467411][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3232.467414][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3232.467418][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3232.467422][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3232.467426][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3232.467429][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3232.467432][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3232.467436][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3232.467438][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3232.467441][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3232.467444][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3232.467449][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3232.467453][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3232.467456][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3232.467459][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3232.467464][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3232.467468][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3232.467474][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3232.467478][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3232.467484][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3232.467489][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3232.467492][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3232.467495][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3232.467498][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3232.467502][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3232.467504][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3232.467510][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3232.467513][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3232.467516][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3232.467520][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3232.467524][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3232.467527][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3232.467530][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3232.467533][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3232.467537][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3232.467541][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3232.467545][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3232.467548][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3232.467553][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3232.467557][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3232.467561][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3232.467566][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3232.467570][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3232.467575][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3232.467578][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3232.467581][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3232.467585][    C3]  </IRQ>
[ 3232.467586][    C3]  <TASK>
[ 3232.467587][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3232.467591][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3232.467594][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3232.467596][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3232.467598][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3232.467600][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3232.467602][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3232.467604][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3232.467605][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3232.467609][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3232.467615][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3232.467620][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3232.467623][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3232.467628][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3232.467631][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3232.467635][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3232.467637][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3232.467642][ C3] xas_alloc (lib/xarray.c:378) 
[ 3232.467646][ C3] xas_create (lib/xarray.c:685) 
[ 3232.467652][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3232.467656][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3232.467660][ C3] __xa_store (lib/xarray.c:1703) 
[ 3232.467664][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3232.467668][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3232.467671][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3232.467674][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3232.467679][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3232.467682][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3232.467685][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3232.467690][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3232.467693][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3232.467695][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3232.467699][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3232.467703][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3232.467708][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3232.467711][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3232.467716][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3232.467719][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3232.467724][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3232.467731][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3232.467735][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3232.467740][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3232.467745][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3232.467748][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3232.467752][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3232.467755][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3232.467758][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3232.467764][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3232.467767][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3232.467772][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3232.467775][    C3] RIP: 0033:0x7f439756d93b
[ 3232.467780][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3232.467782][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3232.467785][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3232.467787][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3232.467789][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3232.467790][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3232.467792][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3232.656118][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3232.656123][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3232.656127][ C0] softirqs last disabled at (0): 0x0 
| [ 3232.656136][    C0] Tainted: [L]=SOFTLOCKUP
[ 3232.656137][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3232.656139][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3232.656143][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3232.656146][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3232.656149][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3232.656151][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3232.656153][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3232.656155][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3232.656157][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3232.656159][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3232.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3232.656165][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3232.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3232.656168][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3232.656170][    C0] PKRU: 55555554
[ 3232.656171][    C0] Call Trace:
[ 3232.656173][    C0]  <TASK>
[ 3232.656175][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3232.656179][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3232.656183][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3232.656186][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3232.656190][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3232.656194][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3232.656196][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3232.656199][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3232.656205][ C0] xa_store (lib/xarray.c:1734) 
[ 3232.656209][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3232.656212][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3232.656217][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3232.656220][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3232.656223][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3232.656227][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3232.656230][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3232.656235][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3232.656239][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3232.656244][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3232.656248][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3232.656252][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3232.656259][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3232.656263][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3232.656267][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3232.656271][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3232.656274][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3232.656278][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3232.656281][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3232.656284][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3232.656290][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3232.656294][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3232.656298][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3232.656301][    C0] RIP: 0033:0x7f439756d93b
[ 3232.656304][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3232.656307][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3232.656310][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3232.656312][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3232.656314][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3232.656316][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3232.656317][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3236.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3236.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3236.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3236.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 3236.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3236.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3236.669145][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3236.669148][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3236.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3236.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3236.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3236.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3236.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3236.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3236.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3236.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3236.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3236.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3236.669171][    C2] PKRU: 55555554
[ 3236.669172][    C2] Call Trace:
[ 3236.669174][    C2]  <TASK>
[ 3236.669176][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3236.669180][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3236.669184][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3236.669187][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3236.669192][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3236.669195][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3236.669197][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3236.669200][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3236.669205][ C2] xa_store (lib/xarray.c:1734) 
[ 3236.669209][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3236.669213][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3236.669218][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3236.669220][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3236.669223][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3236.669227][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3236.669231][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3236.669236][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3236.669240][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3236.669244][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3236.669248][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3236.669253][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3236.669259][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3236.669263][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3236.669267][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3236.669271][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3236.669274][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3236.669278][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3236.669281][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3236.669284][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3236.669290][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3236.669294][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3236.669298][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3236.669301][    C2] RIP: 0033:0x7f439756d93b
[ 3236.669304][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3236.669306][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3236.669309][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3236.669311][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3236.669313][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3236.669315][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3236.669317][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3256.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3256.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3256.669129][ C1] softirqs last disabled at (0): 0x0 
| [ 3256.669138][    C1] Tainted: [L]=SOFTLOCKUP
[ 3256.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3256.669141][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3256.669146][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3256.669150][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3256.669152][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3256.669154][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3256.669156][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3256.669158][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3256.669160][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3256.669162][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3256.669164][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3256.669168][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3256.669170][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3256.669171][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3256.669173][    C1] PKRU: 55555554
[ 3256.669174][    C1] Call Trace:
[ 3256.669176][    C1]  <TASK>
[ 3256.669178][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3256.669182][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3256.669186][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3256.669189][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3256.669195][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3256.669198][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3256.669200][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3256.669204][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3256.669209][ C1] xa_store (lib/xarray.c:1734) 
[ 3256.669213][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3256.669220][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3256.669225][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3256.669228][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3256.669230][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3256.669235][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3256.669238][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3256.669243][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3256.669247][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3256.669252][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3256.669255][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3256.669260][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3256.669266][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3256.669270][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3256.669274][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3256.669279][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3256.669282][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3256.669285][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3256.669288][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3256.669292][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3256.669297][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3256.669301][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3256.669305][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3256.669308][    C1] RIP: 0033:0x7f439756d93b
[ 3256.669311][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3256.669314][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3256.669317][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3256.669319][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3256.669321][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3256.669323][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3256.669325][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3256.670136][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3256.670144][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3256.670148][ C3] softirqs last disabled at (0): 0x0 
| [ 3256.670161][    C3] Tainted: [L]=SOFTLOCKUP
[ 3256.670162][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3256.670165][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 3256.670170][ C3] Code: 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 <48> 01 f0 55 53 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe
All code
========
   0:	0f 1f 40 00          	nopl   0x0(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	48 85 f6             	test   %rsi,%rsi
  1b:	0f 84 5e 01 00 00    	je     0x17f
  21:	48 89 f8             	mov    %rdi,%rax
  24:	41 54                	push   %r12
  26:	44 0f b6 c2          	movzbl %dl,%r8d
  2a:*	48 01 f0             	add    %rsi,%rax		<-- trapping instruction
  2d:	55                   	push   %rbp
  2e:	53                   	push   %rbx
  2f:	72 14                	jb     0x45
  31:	eb 26                	jmp    0x59
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  3d:	ff ff fe 

Code starting with the faulting instruction
===========================================
   0:	48 01 f0             	add    %rsi,%rax
   3:	55                   	push   %rbp
   4:	53                   	push   %rbx
   5:	72 14                	jb     0x1b
   7:	eb 26                	jmp    0x2f
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  13:	ff ff fe 
[ 3256.670174][    C3] RSP: 0018:ffffc90000270a38 EFLAGS: 00000202
[ 3256.670177][    C3] RAX: ffffffffbbee5c00 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3256.670179][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3256.670181][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3256.670183][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3256.670185][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3256.670187][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3256.670189][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3256.670193][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3256.670195][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3256.670197][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3256.670198][    C3] PKRU: 55555554
[ 3256.670200][    C3] Call Trace:
[ 3256.670203][    C3]  <IRQ>
[ 3256.670207][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3256.670214][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3256.670219][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3256.670223][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3256.670226][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3256.670230][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3256.670235][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3256.670238][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3256.670243][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3256.670246][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3256.670249][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3256.670252][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3256.670254][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3256.670257][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3256.670263][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3256.670267][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3256.670270][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3256.670274][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3256.670279][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3256.670283][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3256.670288][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3256.670292][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3256.670299][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3256.670305][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3256.670308][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3256.670311][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3256.670315][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3256.670318][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3256.670321][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3256.670326][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3256.670329][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3256.670332][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3256.670337][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3256.670342][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3256.670345][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3256.670348][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3256.670351][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3256.670355][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3256.670359][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3256.670364][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3256.670366][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3256.670372][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3256.670376][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3256.670379][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3256.670384][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3256.670388][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3256.670394][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3256.670398][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3256.670401][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3256.670405][    C3]  </IRQ>
[ 3256.670406][    C3]  <TASK>
[ 3256.670408][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3256.670413][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3256.670416][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3256.670419][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3256.670422][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3256.670424][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3256.670427][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3256.670428][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3256.670430][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3256.670434][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3256.670440][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3256.670446][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3256.670449][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3256.670454][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3256.670456][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3256.670461][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3256.670463][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3256.670468][ C3] xas_alloc (lib/xarray.c:378) 
[ 3256.670473][ C3] xas_create (lib/xarray.c:685) 
[ 3256.670478][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3256.670483][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3256.670486][ C3] __xa_store (lib/xarray.c:1703) 
[ 3256.670491][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3256.670495][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3256.670498][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3256.670501][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3256.670506][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3256.670510][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3256.670513][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3256.670518][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3256.670521][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3256.670523][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3256.670527][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3256.670531][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3256.670536][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3256.670539][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3256.670553][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3256.670559][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3256.670566][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3256.670594][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3256.670600][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3256.670606][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3256.670611][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3256.670614][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3256.670618][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3256.670621][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3256.670625][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3256.670631][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3256.670635][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3256.670640][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3256.670643][    C3] RIP: 0033:0x7f439756d93b
[ 3256.670648][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3256.670651][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3256.670654][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3256.670657][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3256.670658][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3256.670661][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3256.670663][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3260.656118][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3260.656123][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3260.656126][ C0] softirqs last disabled at (0): 0x0 
| [ 3260.656135][    C0] Tainted: [L]=SOFTLOCKUP
[ 3260.656137][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3260.656138][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3260.656143][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3260.656145][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3260.656148][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3260.656150][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3260.656152][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3260.656153][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3260.656156][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3260.656158][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3260.656161][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3260.656164][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3260.656166][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3260.656168][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3260.656170][    C0] PKRU: 55555554
[ 3260.656171][    C0] Call Trace:
[ 3260.656172][    C0]  <TASK>
[ 3260.656174][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3260.656178][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3260.656182][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3260.656185][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3260.656190][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3260.656193][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3260.656196][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3260.656199][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3260.656204][ C0] xa_store (lib/xarray.c:1734) 
[ 3260.656208][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3260.656211][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3260.656216][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3260.656219][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3260.656222][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3260.656226][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3260.656229][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3260.656235][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3260.656239][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3260.656243][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3260.656247][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3260.656251][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3260.656257][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3260.656261][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3260.656266][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3260.656270][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3260.656273][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3260.656277][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3260.656280][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3260.656283][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3260.656288][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3260.656292][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3260.656296][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3260.656300][    C0] RIP: 0033:0x7f439756d93b
[ 3260.656303][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3260.656305][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3260.656309][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3260.656311][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3260.656313][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3260.656314][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3260.656316][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3264.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3264.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3264.669127][ C2] softirqs last disabled at (0): 0x0 
| [ 3264.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 3264.669137][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3264.669139][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3264.669143][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 3264.669146][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3264.669149][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3264.669151][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3264.669153][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3264.669155][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3264.669157][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3264.669159][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3264.669161][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3264.669165][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3264.669166][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3264.669168][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3264.669170][    C2] PKRU: 55555554
[ 3264.669171][    C2] Call Trace:
[ 3264.669173][    C2]  <TASK>
[ 3264.669176][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3264.669179][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3264.669183][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3264.669186][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3264.669191][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3264.669194][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3264.669197][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3264.669200][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3264.669205][ C2] xa_store (lib/xarray.c:1734) 
[ 3264.669209][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3264.669213][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3264.669218][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3264.669220][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3264.669223][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3264.669228][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3264.669231][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3264.669236][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3264.669240][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3264.669244][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3264.669248][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3264.669253][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3264.669259][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3264.669263][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3264.669267][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3264.669271][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3264.669275][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3264.669279][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3264.669282][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3264.669285][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3264.669290][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3264.669294][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3264.669298][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3264.669301][    C2] RIP: 0033:0x7f439756d93b
[ 3264.669304][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3264.669307][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3264.669309][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3264.669312][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3264.669314][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3264.669316][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3264.669317][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3284.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3284.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3284.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 3284.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 3284.669138][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3284.669140][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3284.669145][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3284.669148][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3284.669150][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3284.669152][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3284.669155][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3284.669156][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3284.669158][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3284.669161][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3284.669163][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3284.669167][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3284.669169][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3284.669170][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3284.669172][    C1] PKRU: 55555554
[ 3284.669173][    C1] Call Trace:
[ 3284.669175][    C1]  <TASK>
[ 3284.669178][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3284.669181][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3284.669185][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3284.669188][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3284.669193][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3284.669196][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3284.669199][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3284.669202][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3284.669207][ C1] xa_store (lib/xarray.c:1734) 
[ 3284.669211][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3284.669214][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3284.669219][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3284.669222][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3284.669225][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3284.669229][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3284.669233][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3284.669238][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3284.669242][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3284.669246][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3284.669250][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3284.669255][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3284.669261][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3284.669265][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3284.669269][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3284.669273][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3284.669277][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3284.669280][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3284.669283][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3284.669287][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3284.669292][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3284.669296][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3284.669300][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3284.669303][    C1] RIP: 0033:0x7f439756d93b
[ 3284.669305][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3284.669308][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3284.669311][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3284.669313][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3284.669315][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3284.669317][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3284.669319][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3284.670136][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3284.670144][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3284.670148][ C3] softirqs last disabled at (0): 0x0 
| [ 3284.670161][    C3] Tainted: [L]=SOFTLOCKUP
[ 3284.670162][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3284.670165][ C3] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 3284.670172][ C3] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 3284.670175][    C3] RSP: 0018:ffffc90000270a40 EFLAGS: 00000202
[ 3284.670178][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3284.670180][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3284.670182][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3284.670184][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3284.670186][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3284.670188][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3284.670191][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3284.670195][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3284.670197][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3284.670199][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3284.670201][    C3] PKRU: 55555554
[ 3284.670202][    C3] Call Trace:
[ 3284.670206][    C3]  <IRQ>
[ 3284.670208][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3284.670215][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3284.670219][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3284.670224][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3284.670227][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3284.670232][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3284.670236][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3284.670240][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3284.670244][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3284.670247][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3284.670250][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3284.670253][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3284.670256][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3284.670259][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3284.670264][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3284.670269][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3284.670272][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3284.670276][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3284.670281][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3284.670286][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3284.670291][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3284.670296][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3284.670302][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3284.670308][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3284.670311][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3284.670314][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3284.670318][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3284.670321][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3284.670324][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3284.670329][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3284.670332][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3284.670335][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3284.670340][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3284.670345][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3284.670348][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3284.670351][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3284.670360][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3284.670365][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3284.670373][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3284.670380][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3284.670384][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3284.670393][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3284.670400][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3284.670406][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3284.670414][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3284.670419][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3284.670425][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3284.670429][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3284.670432][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3284.670436][    C3]  </IRQ>
[ 3284.670438][    C3]  <TASK>
[ 3284.670440][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3284.670445][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3284.670449][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3284.670452][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3284.670455][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3284.670457][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3284.670459][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3284.670461][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3284.670463][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3284.670467][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3284.670473][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3284.670478][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3284.670482][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3284.670487][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3284.670490][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3284.670494][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3284.670497][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3284.670502][ C3] xas_alloc (lib/xarray.c:378) 
[ 3284.670507][ C3] xas_create (lib/xarray.c:685) 
[ 3284.670513][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3284.670517][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3284.670521][ C3] __xa_store (lib/xarray.c:1703) 
[ 3284.670525][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3284.670530][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3284.670533][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3284.670536][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3284.670541][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3284.670545][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3284.670548][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3284.670553][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3284.670556][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3284.670558][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3284.670562][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3284.670566][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3284.670570][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3284.670574][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3284.670579][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3284.670584][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3284.670588][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3284.670596][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3284.670600][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3284.670605][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3284.670610][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3284.670613][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3284.670617][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3284.670620][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3284.670624][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3284.670630][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3284.670634][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3284.670640][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3284.670643][    C3] RIP: 0033:0x7f439756d93b
[ 3284.670647][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3284.670650][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3284.670653][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3284.670656][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3284.670658][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3284.670660][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3284.670662][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3288.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3288.656123][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3288.656127][ C0] softirqs last disabled at (0): 0x0 
| [ 3288.656135][    C0] Tainted: [L]=SOFTLOCKUP
[ 3288.656137][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3288.656139][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 3288.656143][ C0] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 3288.656146][    C0] RSP: 0018:ffffc900034c7a00 EFLAGS: 00000282
[ 3288.656148][    C0] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3288.656150][    C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3288.656152][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3288.656155][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3288.656157][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3288.656159][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3288.656161][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3288.656164][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3288.656166][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3288.656168][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3288.656169][    C0] PKRU: 55555554
[ 3288.656171][    C0] Call Trace:
[ 3288.656172][    C0]  <TASK>
[ 3288.656174][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3288.656179][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3288.656183][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3288.656186][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3288.656189][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3288.656194][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3288.656197][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3288.656200][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3288.656203][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3288.656208][ C0] xa_store (lib/xarray.c:1734) 
[ 3288.656211][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3288.656215][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3288.656220][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3288.656223][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3288.656226][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3288.656230][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3288.656234][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3288.656239][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3288.656243][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3288.656248][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3288.656252][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3288.656256][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3288.656262][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3288.656266][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3288.656270][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3288.656275][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3288.656278][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3288.656282][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3288.656284][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3288.656288][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3288.656293][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3288.656297][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3288.656301][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3288.656304][    C0] RIP: 0033:0x7f439756d93b
[ 3288.656307][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3288.656310][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3288.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3288.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3288.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3288.656318][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3288.656320][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3292.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3292.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3292.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3292.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 3292.669137][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3292.669139][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3292.669143][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3292.669146][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3292.669149][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3292.669151][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3292.669153][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3292.669155][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3292.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3292.669159][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3292.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3292.669165][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3292.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3292.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3292.669171][    C2] PKRU: 55555554
[ 3292.669172][    C2] Call Trace:
[ 3292.669174][    C2]  <TASK>
[ 3292.669176][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3292.669180][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3292.669184][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3292.669188][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3292.669192][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3292.669196][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3292.669198][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3292.669202][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3292.669207][ C2] xa_store (lib/xarray.c:1734) 
[ 3292.669211][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3292.669214][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3292.669219][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3292.669222][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3292.669225][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3292.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3292.669233][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3292.669238][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3292.669242][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3292.669246][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3292.669250][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3292.669254][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3292.669261][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3292.669264][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3292.669269][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3292.669273][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3292.669276][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3292.669280][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3292.669283][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3292.669286][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3292.669291][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3292.669295][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3292.669299][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3292.669303][    C2] RIP: 0033:0x7f439756d93b
[ 3292.669306][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3292.669308][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3292.669311][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3292.669314][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3292.669315][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3292.669317][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3292.669319][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3310.478721][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 3310.479004][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 3310.479254][    C1] NMI backtrace for cpu 1
| [ 3310.479264][    C1] Tainted: [L]=SOFTLOCKUP
[ 3310.479265][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3310.479267][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3310.479273][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3310.479276][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3310.479279][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3310.479281][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3310.479283][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3310.479285][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3310.479287][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3310.479289][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3310.479291][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3310.479294][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3310.479296][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3310.479298][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3310.479299][    C1] PKRU: 55555554
[ 3310.479301][    C1] Call Trace:
[ 3310.479302][    C1]  <TASK>
[ 3310.479305][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3310.479308][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3310.479312][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3310.479315][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3310.479320][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3310.479323][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3310.479326][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3310.479329][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3310.479334][ C1] xa_store (lib/xarray.c:1734) 
[ 3310.479338][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3310.479341][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3310.479346][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3310.479349][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3310.479352][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3310.479356][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3310.479360][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3310.479365][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3310.479369][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3310.479373][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3310.479377][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3310.479381][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3310.479388][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3310.479391][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3310.479395][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3310.479400][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3310.479403][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3310.479407][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3310.479409][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3310.479413][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3310.479418][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3310.479423][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3310.479427][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3310.479430][    C1] RIP: 0033:0x7f439756d93b
[ 3310.479433][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3310.479436][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3310.479439][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3310.479441][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3310.479443][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3310.479445][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3310.479447][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3310.479445][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 3310.479447][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3310.479452][    C1]  </TASK>
| [ 3310.480267][    C3] Tainted: [L]=SOFTLOCKUP
[ 3310.480269][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3310.480272][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3310.480278][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3310.480283][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3310.480288][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3310.480291][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3310.480294][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3310.480297][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3310.480301][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3310.480304][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3310.480308][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3310.480314][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3310.480317][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3310.480319][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3310.480322][    C3] PKRU: 55555554
[ 3310.480324][    C3] Call Trace:
[ 3310.480326][    C3]  <IRQ>
[ 3310.480329][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3310.480334][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3310.480339][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3310.480342][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3310.480346][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3310.480351][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3310.480354][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3310.480358][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3310.480362][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3310.480365][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3310.480368][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3310.480371][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3310.480374][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3310.480379][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3310.480383][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3310.480386][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3310.480389][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3310.480394][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3310.480398][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3310.480403][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3310.480406][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3310.480413][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3310.480418][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3310.480421][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3310.480424][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3310.480427][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3310.480431][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3310.480434][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3310.480440][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3310.480443][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3310.480446][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3310.480450][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3310.480454][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3310.480457][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3310.480460][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3310.480464][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3310.480467][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3310.480471][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3310.480476][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3310.480478][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3310.480483][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3310.480487][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3310.480490][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3310.480495][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3310.480499][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3310.480505][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3310.480508][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3310.480511][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3310.480515][    C3]  </IRQ>
[ 3310.480516][    C3]  <TASK>
[ 3310.480518][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3310.480521][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3310.480525][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3310.480527][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3310.480530][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3310.480531][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3310.480533][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3310.480534][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3310.480536][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3310.480540][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3310.480546][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3310.480551][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3310.480554][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3310.480559][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3310.480562][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3310.480565][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3310.480568][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3310.480573][ C3] xas_alloc (lib/xarray.c:378) 
[ 3310.480577][ C3] xas_create (lib/xarray.c:685) 
[ 3310.480583][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3310.480587][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3310.480591][ C3] __xa_store (lib/xarray.c:1703) 
[ 3310.480595][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3310.480600][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3310.480602][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3310.480605][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3310.480610][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3310.480614][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3310.480617][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3310.480622][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3310.480624][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3310.480627][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3310.480631][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3310.480634][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3310.480639][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3310.480643][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3310.480647][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3310.480651][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3310.480655][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3310.480662][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3310.480665][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3310.480670][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3310.480675][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3310.480678][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3310.480682][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3310.480684][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3310.480688][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3310.480694][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3310.480697][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3310.480702][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3310.480705][    C3] RIP: 0033:0x7f439756d93b
[ 3310.480709][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3310.480712][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3310.480715][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3310.480717][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3310.480718][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3310.480720][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3310.480722][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3316.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3316.656123][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3316.656126][ C0] softirqs last disabled at (0): 0x0 
| [ 3316.656136][    C0] Tainted: [L]=SOFTLOCKUP
[ 3316.656137][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3316.656139][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3316.656143][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3316.656147][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3316.656149][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3316.656151][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3316.656153][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3316.656155][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3316.656157][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3316.656159][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3316.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3316.656165][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3316.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3316.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3316.656170][    C0] PKRU: 55555554
[ 3316.656171][    C0] Call Trace:
[ 3316.656173][    C0]  <TASK>
[ 3316.656175][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3316.656179][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3316.656182][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3316.656185][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3316.656190][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3316.656193][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3316.656196][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3316.656199][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3316.656204][ C0] xa_store (lib/xarray.c:1734) 
[ 3316.656208][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3316.656211][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3316.656215][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3316.656218][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3316.656221][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3316.656225][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3316.656229][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3316.656234][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3316.656238][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3316.656243][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3316.656247][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3316.656251][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3316.656258][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3316.656261][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3316.656266][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3316.656270][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3316.656273][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3316.656277][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3316.656280][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3316.656283][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3316.656289][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3316.656292][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3316.656296][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3316.656299][    C0] RIP: 0033:0x7f439756d93b
[ 3316.656302][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3316.656305][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3316.656308][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3316.656310][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3316.656312][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3316.656314][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3316.656315][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3320.669131][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3320.669139][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3320.669142][ C2] softirqs last disabled at (0): 0x0 
| [ 3320.669156][    C2] Tainted: [L]=SOFTLOCKUP
[ 3320.669157][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3320.669160][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3320.669168][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3320.669171][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3320.669174][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3320.669176][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3320.669178][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3320.669180][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3320.669182][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3320.669184][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3320.669187][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3320.669191][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3320.669193][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3320.669194][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3320.669196][    C2] PKRU: 55555554
[ 3320.669197][    C2] Call Trace:
[ 3320.669201][    C2]  <TASK>
[ 3320.669205][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3320.669209][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3320.669213][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3320.669217][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3320.669223][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3320.669227][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3320.669230][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3320.669233][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3320.669238][ C2] xa_store (lib/xarray.c:1734) 
[ 3320.669243][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3320.669248][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3320.669253][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3320.669256][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3320.669258][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3320.669264][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3320.669268][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3320.669275][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3320.669279][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3320.669283][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3320.669288][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3320.669292][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3320.669300][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3320.669304][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3320.669309][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3320.669314][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3320.669318][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3320.669322][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3320.669326][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3320.669329][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3320.669335][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3320.669339][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3320.669344][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3320.669349][    C2] RIP: 0033:0x7f439756d93b
[ 3320.669353][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3320.669356][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3320.669359][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3320.669361][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3320.669363][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3320.669365][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3320.669366][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3336.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3336.669124][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3336.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 3336.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 3336.669138][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3336.669140][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3336.669145][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3336.669148][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3336.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3336.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3336.669155][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3336.669157][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3336.669159][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3336.669161][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3336.669163][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3336.669167][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3336.669169][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3336.669170][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3336.669172][    C1] PKRU: 55555554
[ 3336.669173][    C1] Call Trace:
[ 3336.669175][    C1]  <TASK>
[ 3336.669177][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3336.669181][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3336.669185][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3336.669188][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3336.669193][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3336.669196][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3336.669198][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3336.669201][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3336.669207][ C1] xa_store (lib/xarray.c:1734) 
[ 3336.669211][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3336.669215][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3336.669220][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3336.669223][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3336.669225][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3336.669230][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3336.669233][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3336.669238][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3336.669242][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3336.669246][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3336.669250][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3336.669255][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3336.669261][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3336.669265][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3336.669269][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3336.669274][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3336.669277][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3336.669281][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3336.669284][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3336.669287][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3336.669293][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3336.669297][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3336.669301][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3336.669304][    C1] RIP: 0033:0x7f439756d93b
[ 3336.669308][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3336.669311][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3336.669314][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3336.669316][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3336.669318][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3336.669320][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3336.669322][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3336.670136][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3336.670144][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3336.670148][ C3] softirqs last disabled at (0): 0x0 
| [ 3336.670160][    C3] Tainted: [L]=SOFTLOCKUP
[ 3336.670162][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3336.670165][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3336.670172][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3336.670176][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3336.670179][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3336.670181][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3336.670183][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3336.670185][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3336.670187][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3336.670189][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3336.670192][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3336.670196][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3336.670198][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3336.670199][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3336.670201][    C3] PKRU: 55555554
[ 3336.670202][    C3] Call Trace:
[ 3336.670206][    C3]  <IRQ>
[ 3336.670208][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3336.670213][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3336.670219][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3336.670222][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3336.670227][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3336.670232][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3336.670235][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3336.670239][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3336.670242][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3336.670245][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3336.670248][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3336.670250][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3336.670253][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3336.670259][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3336.670263][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3336.670266][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3336.670270][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3336.670275][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3336.670279][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3336.670285][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3336.670290][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3336.670296][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3336.670301][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3336.670304][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3336.670307][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3336.670311][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3336.670314][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3336.670317][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3336.670323][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3336.670326][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3336.670329][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3336.670333][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3336.670338][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3336.670342][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3336.670344][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3336.670348][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3336.670351][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3336.670356][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3336.670360][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3336.670363][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3336.670368][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3336.670372][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3336.670375][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3336.670380][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3336.670385][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3336.670391][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3336.670395][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3336.670398][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3336.670403][    C3]  </IRQ>
[ 3336.670404][    C3]  <TASK>
[ 3336.670405][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3336.670411][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3336.670414][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3336.670417][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3336.670420][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3336.670422][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3336.670424][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3336.670426][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3336.670428][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3336.670432][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3336.670438][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3336.670444][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3336.670448][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3336.670452][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3336.670455][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3336.670460][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3336.670462][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3336.670468][ C3] xas_alloc (lib/xarray.c:378) 
[ 3336.670472][ C3] xas_create (lib/xarray.c:685) 
[ 3336.670478][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3336.670483][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3336.670486][ C3] __xa_store (lib/xarray.c:1703) 
[ 3336.670491][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3336.670495][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3336.670498][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3336.670501][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3336.670506][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3336.670511][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3336.670514][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3336.670519][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3336.670523][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3336.670525][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3336.670529][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3336.670533][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3336.670538][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3336.670542][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3336.670547][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3336.670551][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3336.670556][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3336.670564][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3336.670568][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3336.670573][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3336.670578][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3336.670581][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3336.670585][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3336.670588][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3336.670592][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3336.670598][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3336.670602][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3336.670607][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3336.670610][    C3] RIP: 0033:0x7f439756d93b
[ 3336.670615][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3336.670617][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3336.670621][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3336.670623][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3336.670625][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3336.670627][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3336.670629][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3344.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3344.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3344.656127][ C0] softirqs last disabled at (0): 0x0 
| [ 3344.656136][    C0] Tainted: [L]=SOFTLOCKUP
[ 3344.656137][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3344.656139][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3344.656144][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3344.656146][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3344.656149][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3344.656151][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3344.656153][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3344.656155][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3344.656157][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3344.656159][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3344.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3344.656165][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3344.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3344.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3344.656170][    C0] PKRU: 55555554
[ 3344.656171][    C0] Call Trace:
[ 3344.656173][    C0]  <TASK>
[ 3344.656175][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3344.656179][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3344.656183][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3344.656186][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3344.656191][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3344.656194][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3344.656197][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3344.656200][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3344.656205][ C0] xa_store (lib/xarray.c:1734) 
[ 3344.656209][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3344.656212][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3344.656217][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3344.656220][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3344.656223][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3344.656227][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3344.656231][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3344.656236][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3344.656240][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3344.656244][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3344.656248][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3344.656253][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3344.656259][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3344.656263][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3344.656267][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3344.656272][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3344.656275][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3344.656279][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3344.656281][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3344.656285][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3344.656290][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3344.656294][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3344.656299][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3344.656302][    C0] RIP: 0033:0x7f439756d93b
[ 3344.656305][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3344.656308][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3344.656310][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3344.656313][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3344.656315][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3344.656316][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3344.656318][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3348.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3348.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3348.669127][ C2] softirqs last disabled at (0): 0x0 
| [ 3348.669135][    C2] Tainted: [L]=SOFTLOCKUP
[ 3348.669137][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3348.669138][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3348.669143][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3348.669146][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3348.669149][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3348.669151][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3348.669153][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3348.669155][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3348.669157][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3348.669159][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3348.669161][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3348.669165][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3348.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3348.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3348.669170][    C2] PKRU: 55555554
[ 3348.669172][    C2] Call Trace:
[ 3348.669174][    C2]  <TASK>
[ 3348.669176][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3348.669180][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3348.669184][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3348.669187][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3348.669192][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3348.669195][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3348.669198][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3348.669201][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3348.669206][ C2] xa_store (lib/xarray.c:1734) 
[ 3348.669211][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3348.669214][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3348.669219][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3348.669221][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3348.669224][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3348.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3348.669232][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3348.669237][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3348.669241][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3348.669246][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3348.669249][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3348.669254][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3348.669260][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3348.669264][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3348.669268][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3348.669272][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3348.669275][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3348.669279][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3348.669282][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3348.669285][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3348.669290][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3348.669294][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3348.669298][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3348.669301][    C2] RIP: 0033:0x7f439756d93b
[ 3348.669305][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3348.669307][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3348.669310][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3348.669312][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3348.669314][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3348.669316][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3348.669318][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3364.669119][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3364.669124][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3364.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 3364.669136][    C1] Tainted: [L]=SOFTLOCKUP
[ 3364.669137][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3364.669139][ C1] RIP: 0010:kasan_check_range (./include/linux/kasan.h:64 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3364.669144][ C1] Code: 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df <4d> 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d
All code
========
   0:	5b                   	pop    %rbx
   1:	5d                   	pop    %rbp
   2:	41 5c                	pop    %r12
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  10:	7f ff ff 
  13:	48 39 c7             	cmp    %rax,%rdi
  16:	76 dd                	jbe    0xfffffffffffffff5
  18:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  1d:	48 89 fd             	mov    %rdi,%rbp
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df 
  2a:*	4d 89 d1             	mov    %r10,%r9		<-- trapping instruction
  2d:	48 c1 ed 03          	shr    $0x3,%rbp
  31:	49 c1 e9 03          	shr    $0x3,%r9
  35:	48 01 c5             	add    %rax,%rbp
  38:	49 01 c1             	add    %rax,%r9
  3b:	48 89 e8             	mov    %rbp,%rax
  3e:	49                   	rex.WB
  3f:	8d                   	.byte 0x8d

Code starting with the faulting instruction
===========================================
   0:	4d 89 d1             	mov    %r10,%r9
   3:	48 c1 ed 03          	shr    $0x3,%rbp
   7:	49 c1 e9 03          	shr    $0x3,%r9
   b:	48 01 c5             	add    %rax,%rbp
   e:	49 01 c1             	add    %rax,%r9
  11:	48 89 e8             	mov    %rbp,%rax
  14:	49                   	rex.WB
  15:	8d                   	.byte 0x8d
[ 3364.669147][    C1] RSP: 0018:ffffc900034b79f8 EFLAGS: 00000212
[ 3364.669150][    C1] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3364.669152][    C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3364.669154][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3364.669156][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3364.669158][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3364.669160][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3364.669163][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3364.669166][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3364.669168][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3364.669170][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3364.669171][    C1] PKRU: 55555554
[ 3364.669173][    C1] Call Trace:
[ 3364.669174][    C1]  <TASK>
[ 3364.669177][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3364.669182][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3364.669185][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3364.669189][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3364.669192][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3364.669197][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3364.669200][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3364.669203][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3364.669206][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3364.669211][ C1] xa_store (lib/xarray.c:1734) 
[ 3364.669215][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3364.669219][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3364.669223][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3364.669226][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3364.669229][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3364.669234][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3364.669237][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3364.669242][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3364.669246][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3364.669251][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3364.669255][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3364.669259][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3364.669266][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3364.669269][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3364.669273][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3364.669278][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3364.669282][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3364.669285][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3364.669288][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3364.669292][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3364.669297][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3364.669301][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3364.669305][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3364.669308][    C1] RIP: 0033:0x7f439756d93b
[ 3364.669310][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3364.669313][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3364.669316][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3364.669318][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3364.669320][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3364.669321][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3364.669323][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3364.670137][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3364.670144][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3364.670148][ C3] softirqs last disabled at (0): 0x0 
| [ 3364.670161][    C3] Tainted: [L]=SOFTLOCKUP
[ 3364.670163][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3364.670165][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3364.670172][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3364.670176][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3364.670179][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3364.670181][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3364.670183][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3364.670185][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3364.670188][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3364.670190][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3364.670192][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3364.670196][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3364.670198][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3364.670200][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3364.670201][    C3] PKRU: 55555554
[ 3364.670203][    C3] Call Trace:
[ 3364.670208][    C3]  <IRQ>
[ 3364.670210][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3364.670216][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3364.670222][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3364.670225][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3364.670230][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3364.670235][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3364.670238][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3364.670242][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3364.670245][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3364.670249][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3364.670252][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3364.670254][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3364.670257][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3364.670263][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3364.670268][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3364.670271][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3364.670275][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3364.670280][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3364.670284][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3364.670290][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3364.670295][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3364.670301][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3364.670306][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3364.670310][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3364.670313][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3364.670316][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3364.670319][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3364.670322][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3364.670329][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3364.670332][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3364.670335][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3364.670339][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3364.670343][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3364.670347][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3364.670350][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3364.670353][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3364.670357][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3364.670361][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3364.670366][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3364.670368][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3364.670374][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3364.670378][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3364.670382][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3364.670386][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3364.670391][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3364.670397][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3364.670400][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3364.670404][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3364.670408][    C3]  </IRQ>
[ 3364.670409][    C3]  <TASK>
[ 3364.670410][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3364.670415][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3364.670419][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3364.670421][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3364.670424][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3364.670427][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3364.670429][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3364.670431][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3364.670433][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3364.670437][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3364.670443][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3364.670449][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3364.670453][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3364.670457][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3364.670460][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3364.670464][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3364.670467][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3364.670473][ C3] xas_alloc (lib/xarray.c:378) 
[ 3364.670477][ C3] xas_create (lib/xarray.c:685) 
[ 3364.670483][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3364.670488][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3364.670492][ C3] __xa_store (lib/xarray.c:1703) 
[ 3364.670496][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3364.670501][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3364.670504][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3364.670507][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3364.670512][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3364.670516][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3364.670519][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3364.670525][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3364.670528][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3364.670530][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3364.670535][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3364.670538][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3364.670543][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3364.670547][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3364.670551][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3364.670555][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3364.670560][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3364.670568][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3364.670572][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3364.670577][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3364.670582][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3364.670585][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3364.670590][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3364.670592][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3364.670596][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3364.670602][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3364.670606][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3364.670611][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3364.670614][    C3] RIP: 0033:0x7f439756d93b
[ 3364.670618][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3364.670622][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3364.670625][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3364.670627][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3364.670629][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3364.670631][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3364.670633][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3372.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3372.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3372.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 3372.656136][    C0] Tainted: [L]=SOFTLOCKUP
[ 3372.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3372.656140][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3372.656144][ C0] Code: ff fe 48 39 c7 77 23 44 89 c2 e8 b7 e7 ff ff 83 f0 01 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd <4c> 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48
All code
========
   0:	ff                   	(bad)
   1:	fe 48 39             	decb   0x39(%rax)
   4:	c7                   	(bad)
   5:	77 23                	ja     0x2a
   7:	44 89 c2             	mov    %r8d,%edx
   a:	e8 b7 e7 ff ff       	call   0xffffffffffffe7c6
   f:	83 f0 01             	xor    $0x1,%eax
  12:	5b                   	pop    %rbx
  13:	5d                   	pop    %rbp
  14:	41 5c                	pop    %r12
  16:	c3                   	ret
  17:	cc                   	int3
  18:	cc                   	int3
  19:	cc                   	int3
  1a:	cc                   	int3
  1b:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  22:	7f ff ff 
  25:	48 39 c7             	cmp    %rax,%rdi
  28:	76 dd                	jbe    0x7
  2a:*	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10		<-- trapping instruction
  2f:	48 89 fd             	mov    %rdi,%rbp
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4d 89 d1             	mov    %r10,%r9
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   5:	48 89 fd             	mov    %rdi,%rbp
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4d 89 d1             	mov    %r10,%r9
  15:	48                   	rex.W
[ 3372.656147][    C0] RSP: 0018:ffffc900034c79f8 EFLAGS: 00000212
[ 3372.656149][    C0] RAX: ffff7fffffffffff RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3372.656151][    C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3372.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3372.656155][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3372.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3372.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3372.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3372.656165][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3372.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3372.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3372.656171][    C0] PKRU: 55555554
[ 3372.656172][    C0] Call Trace:
[ 3372.656173][    C0]  <TASK>
[ 3372.656176][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3372.656180][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3372.656184][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3372.656188][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3372.656191][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3372.656196][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3372.656199][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3372.656202][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3372.656205][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3372.656210][ C0] xa_store (lib/xarray.c:1734) 
[ 3372.656214][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3372.656218][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3372.656223][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3372.656225][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3372.656228][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3372.656233][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3372.656236][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3372.656242][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3372.656246][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3372.656250][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3372.656254][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3372.656259][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3372.656265][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3372.656269][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3372.656273][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3372.656277][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3372.656281][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3372.656284][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3372.656287][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3372.656291][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3372.656296][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3372.656300][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3372.656304][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3372.656307][    C0] RIP: 0033:0x7f439756d93b
[ 3372.656309][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3372.656312][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3372.656315][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3372.656317][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3372.656319][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3372.656321][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3372.656323][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3376.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3376.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3376.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3376.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 3376.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3376.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3376.669144][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 3376.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3376.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3376.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3376.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3376.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3376.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3376.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3376.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3376.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3376.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3376.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3376.669171][    C2] PKRU: 55555554
[ 3376.669173][    C2] Call Trace:
[ 3376.669174][    C2]  <TASK>
[ 3376.669176][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3376.669180][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3376.669184][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3376.669187][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3376.669192][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3376.669195][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3376.669198][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3376.669201][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3376.669206][ C2] xa_store (lib/xarray.c:1734) 
[ 3376.669210][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3376.669213][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3376.669218][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3376.669221][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3376.669223][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3376.669228][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3376.669231][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3376.669237][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3376.669240][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3376.669245][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3376.669249][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3376.669253][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3376.669260][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3376.669264][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3376.669268][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3376.669272][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3376.669276][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3376.669279][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3376.669282][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3376.669286][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3376.669291][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3376.669295][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3376.669299][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3376.669302][    C2] RIP: 0033:0x7f439756d93b
[ 3376.669305][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3376.669307][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3376.669310][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3376.669312][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3376.669314][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3376.669316][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3376.669318][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3388.492823][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 3388.493101][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 3388.493339][    C1] NMI backtrace for cpu 1
| [ 3388.493349][    C1] Tainted: [L]=SOFTLOCKUP
[ 3388.493351][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3388.493353][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3388.493358][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3388.493361][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3388.493364][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3388.493367][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3388.493369][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3388.493371][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3388.493373][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3388.493375][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3388.493377][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3388.493380][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3388.493382][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3388.493383][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3388.493385][    C1] PKRU: 55555554
[ 3388.493386][    C1] Call Trace:
[ 3388.493388][    C1]  <TASK>
[ 3388.493390][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3388.493394][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3388.493398][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3388.493401][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3388.493406][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3388.493409][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3388.493411][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3388.493414][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3388.493420][ C1] xa_store (lib/xarray.c:1734) 
[ 3388.493424][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3388.493428][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3388.493433][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3388.493436][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3388.493439][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3388.493443][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3388.493446][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3388.493452][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3388.493455][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3388.493460][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3388.493464][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3388.493468][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3388.493475][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3388.493479][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3388.493483][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3388.493487][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3388.493490][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3388.493494][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3388.493497][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3388.493500][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3388.493506][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3388.493510][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3388.493514][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3388.493517][    C1] RIP: 0033:0x7f439756d93b
[ 3388.493520][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3388.493522][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3388.493525][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3388.493527][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3388.493529][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3388.493531][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3388.493533][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3388.493531][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 3388.493533][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3388.493539][    C1]  </TASK>
| [ 3388.494345][    C3] Tainted: [L]=SOFTLOCKUP
[ 3388.494346][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3388.494348][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3388.494353][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3388.494356][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3388.494360][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3388.494362][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3388.494364][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3388.494366][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3388.494368][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3388.494371][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3388.494373][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3388.494378][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3388.494380][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3388.494381][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3388.494383][    C3] PKRU: 55555554
[ 3388.494384][    C3] Call Trace:
[ 3388.494386][    C3]  <IRQ>
[ 3388.494387][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3388.494392][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3388.494396][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3388.494400][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3388.494403][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3388.494408][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3388.494411][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3388.494415][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3388.494418][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3388.494421][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3388.494424][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3388.494427][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3388.494430][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3388.494435][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3388.494438][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3388.494441][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3388.494444][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3388.494449][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3388.494453][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3388.494458][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3388.494462][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3388.494468][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3388.494473][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3388.494476][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3388.494479][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3388.494483][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3388.494486][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3388.494489][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3388.494495][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3388.494497][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3388.494500][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3388.494505][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3388.494509][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3388.494512][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3388.494515][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3388.494519][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3388.494522][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3388.494526][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3388.494530][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3388.494533][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3388.494538][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3388.494542][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3388.494545][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3388.494550][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3388.494554][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3388.494560][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3388.494563][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3388.494566][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3388.494570][    C3]  </IRQ>
[ 3388.494571][    C3]  <TASK>
[ 3388.494573][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3388.494577][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3388.494580][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3388.494583][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3388.494585][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3388.494587][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3388.494588][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3388.494590][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3388.494592][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3388.494596][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3388.494601][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3388.494607][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3388.494610][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3388.494614][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3388.494617][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3388.494621][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3388.494624][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3388.494629][ C3] xas_alloc (lib/xarray.c:378) 
[ 3388.494633][ C3] xas_create (lib/xarray.c:685) 
[ 3388.494639][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3388.494643][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3388.494646][ C3] __xa_store (lib/xarray.c:1703) 
[ 3388.494650][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3388.494655][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3388.494658][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3388.494661][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3388.494665][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3388.494669][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3388.494672][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3388.494677][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3388.494680][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3388.494682][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3388.494686][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3388.494689][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3388.494694][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3388.494698][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3388.494702][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3388.494706][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3388.494710][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3388.494717][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3388.494720][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3388.494725][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3388.494731][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3388.494734][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3388.494737][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3388.494740][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3388.494743][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3388.494749][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3388.494753][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3388.494758][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3388.494761][    C3] RIP: 0033:0x7f439756d93b
[ 3388.494766][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3388.494768][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3388.494771][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3388.494774][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3388.494775][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3388.494777][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3388.494779][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3400.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3400.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3400.656127][ C0] softirqs last disabled at (0): 0x0 
| [ 3400.656136][    C0] Tainted: [L]=SOFTLOCKUP
[ 3400.656137][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3400.656139][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3400.656144][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3400.656147][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3400.656149][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3400.656151][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3400.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3400.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3400.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3400.656159][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3400.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3400.656165][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3400.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3400.656168][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3400.656170][    C0] PKRU: 55555554
[ 3400.656171][    C0] Call Trace:
[ 3400.656173][    C0]  <TASK>
[ 3400.656175][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3400.656179][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3400.656182][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3400.656185][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3400.656190][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3400.656193][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3400.656196][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3400.656199][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3400.656204][ C0] xa_store (lib/xarray.c:1734) 
[ 3400.656208][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3400.656211][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3400.656216][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3400.656219][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3400.656221][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3400.656226][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3400.656229][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3400.656235][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3400.656238][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3400.656243][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3400.656247][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3400.656251][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3400.656257][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3400.656261][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3400.656265][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3400.656269][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3400.656273][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3400.656277][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3400.656279][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3400.656283][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3400.656288][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3400.656292][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3400.656296][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3400.656299][    C0] RIP: 0033:0x7f439756d93b
[ 3400.656302][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3400.656305][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3400.656308][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3400.656310][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3400.656312][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3400.656314][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3400.656316][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3404.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3404.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3404.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3404.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 3404.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3404.669140][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 3404.669144][ C2] Code: 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff 5b b8 01 00 00 00 5d 41 5c <c3> cc cc cc cc 41 bc 08 00 00 00 45 29 dc 49 8d 14 2c eb 0c 48 83
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	48 85 d2             	test   %rdx,%rdx
   5:	0f 84 4c ff ff ff    	je     0xffffffffffffff57
   b:	41 83 e2 07          	and    $0x7,%r10d
   f:	49 39 d1             	cmp    %rdx,%r9
  12:	0f 85 34 ff ff ff    	jne    0xffffffffffffff4c
  18:	45 3a 11             	cmp    (%r9),%r10b
  1b:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff4c
  21:	5b                   	pop    %rbx
  22:	b8 01 00 00 00       	mov    $0x1,%eax
  27:	5d                   	pop    %rbp
  28:	41 5c                	pop    %r12
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  35:	45 29 dc             	sub    %r11d,%r12d
  38:	49 8d 14 2c          	lea    (%r12,%rbp,1),%rdx
  3c:	eb 0c                	jmp    0x4a
  3e:	48                   	rex.W
  3f:	83                   	.byte 0x83

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	41 bc 08 00 00 00    	mov    $0x8,%r12d
   b:	45 29 dc             	sub    %r11d,%r12d
   e:	49 8d 14 2c          	lea    (%r12,%rbp,1),%rdx
  12:	eb 0c                	jmp    0x20
  14:	48                   	rex.W
  15:	83                   	.byte 0x83
[ 3404.669147][    C2] RSP: 0018:ffffc900034d7a10 EFLAGS: 00000246
[ 3404.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3404.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3404.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3404.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3404.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3404.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3404.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3404.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3404.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3404.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3404.669171][    C2] PKRU: 55555554
[ 3404.669173][    C2] Call Trace:
[ 3404.669175][    C2]  <TASK>
[ 3404.669176][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3404.669182][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3404.669185][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3404.669188][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3404.669191][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3404.669196][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3404.669199][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3404.669202][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3404.669205][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3404.669210][ C2] xa_store (lib/xarray.c:1734) 
[ 3404.669214][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3404.669217][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3404.669222][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3404.669225][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3404.669228][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3404.669233][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3404.669236][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3404.669241][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3404.669245][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3404.669249][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3404.669253][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3404.669258][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3404.669264][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3404.669268][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3404.669272][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3404.669276][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3404.669279][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3404.669283][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3404.669286][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3404.669290][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3404.669295][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3404.669298][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3404.669303][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3404.669306][    C2] RIP: 0033:0x7f439756d93b
[ 3404.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3404.669311][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3404.669314][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3404.669316][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3404.669318][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3404.669320][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3404.669322][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3412.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3412.669124][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3412.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 3412.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 3412.669138][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3412.669140][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3412.669145][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3412.669148][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3412.669150][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3412.669152][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3412.669154][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3412.669156][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3412.669158][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3412.669160][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3412.669163][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3412.669166][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3412.669168][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3412.669170][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3412.669171][    C1] PKRU: 55555554
[ 3412.669173][    C1] Call Trace:
[ 3412.669174][    C1]  <TASK>
[ 3412.669176][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3412.669180][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3412.669184][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3412.669187][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3412.669192][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3412.669195][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3412.669197][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3412.669200][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3412.669205][ C1] xa_store (lib/xarray.c:1734) 
[ 3412.669209][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3412.669212][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3412.669216][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3412.669219][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3412.669222][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3412.669227][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3412.669230][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3412.669235][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3412.669239][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3412.669244][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3412.669247][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3412.669252][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3412.669258][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3412.669262][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3412.669266][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3412.669270][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3412.669274][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3412.669277][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3412.669280][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3412.669283][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3412.669289][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3412.669293][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3412.669297][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3412.669300][    C1] RIP: 0033:0x7f439756d93b
[ 3412.669303][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3412.669306][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3412.669309][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3412.669311][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3412.669313][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3412.669315][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3412.669317][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3412.670136][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3412.670144][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3412.670148][ C3] softirqs last disabled at (0): 0x0 
| [ 3412.670160][    C3] Tainted: [L]=SOFTLOCKUP
[ 3412.670162][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3412.670165][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3412.670173][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3412.670176][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3412.670179][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3412.670181][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3412.670183][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3412.670185][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3412.670187][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3412.670189][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3412.670192][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3412.670196][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3412.670198][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3412.670200][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3412.670201][    C3] PKRU: 55555554
[ 3412.670203][    C3] Call Trace:
[ 3412.670207][    C3]  <IRQ>
[ 3412.670209][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3412.670215][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3412.670220][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3412.670223][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3412.670228][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3412.670232][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3412.670236][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3412.670240][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3412.670243][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3412.670247][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3412.670249][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3412.670252][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3412.670255][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3412.670260][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3412.670265][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3412.670268][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3412.670272][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3412.670277][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3412.670281][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3412.670286][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3412.670291][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3412.670297][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3412.670303][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3412.670306][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3412.670309][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3412.670313][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3412.670316][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3412.670319][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3412.670325][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3412.670328][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3412.670331][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3412.670336][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3412.670341][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3412.670344][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3412.670347][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3412.670350][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3412.670354][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3412.670358][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3412.670363][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3412.670366][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3412.670372][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3412.670376][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3412.670379][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3412.670384][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3412.670389][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3412.670395][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3412.670398][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3412.670402][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3412.670405][    C3]  </IRQ>
[ 3412.670407][    C3]  <TASK>
[ 3412.670408][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3412.670414][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3412.670417][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3412.670420][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3412.670423][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3412.670425][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3412.670427][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3412.670430][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3412.670431][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3412.670435][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3412.670441][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3412.670447][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3412.670450][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3412.670455][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3412.670458][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3412.670462][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3412.670465][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3412.670470][ C3] xas_alloc (lib/xarray.c:378) 
[ 3412.670474][ C3] xas_create (lib/xarray.c:685) 
[ 3412.670480][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3412.670485][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3412.670488][ C3] __xa_store (lib/xarray.c:1703) 
[ 3412.670492][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3412.670497][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3412.670500][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3412.670503][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3412.670508][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3412.670512][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3412.670515][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3412.670521][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3412.670524][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3412.670527][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3412.670531][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3412.670534][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3412.670539][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3412.670543][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3412.670548][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3412.670552][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3412.670556][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3412.670564][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3412.670568][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3412.670574][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3412.670578][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3412.670581][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3412.670585][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3412.670588][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3412.670591][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3412.670597][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3412.670601][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3412.670606][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3412.670610][    C3] RIP: 0033:0x7f439756d93b
[ 3412.670614][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3412.670617][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3412.670620][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3412.670622][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3412.670624][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3412.670626][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3412.670628][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3428.656129][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3428.656136][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3428.656139][ C0] softirqs last disabled at (0): 0x0 
| [ 3428.656151][    C0] Tainted: [L]=SOFTLOCKUP
[ 3428.656152][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3428.656154][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3428.656162][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3428.656165][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3428.656168][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3428.656170][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3428.656172][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3428.656174][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3428.656176][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3428.656178][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3428.656181][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3428.656184][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3428.656186][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3428.656188][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3428.656189][    C0] PKRU: 55555554
[ 3428.656191][    C0] Call Trace:
[ 3428.656195][    C0]  <TASK>
[ 3428.656198][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3428.656202][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3428.656206][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3428.656210][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3428.656216][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3428.656219][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3428.656222][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3428.656225][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3428.656231][ C0] xa_store (lib/xarray.c:1734) 
[ 3428.656235][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3428.656240][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3428.656245][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3428.656247][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3428.656250][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3428.656255][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3428.656259][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3428.656266][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3428.656269][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3428.656274][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3428.656279][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3428.656284][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3428.656292][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3428.656296][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3428.656301][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3428.656306][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3428.656309][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3428.656314][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3428.656317][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3428.656320][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3428.656326][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3428.656330][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3428.656335][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3428.656339][    C0] RIP: 0033:0x7f439756d93b
[ 3428.656342][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3428.656345][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3428.656348][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3428.656350][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3428.656352][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3428.656353][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3428.656355][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3432.669121][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3432.669126][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3432.669130][ C2] softirqs last disabled at (0): 0x0 
| [ 3432.669139][    C2] Tainted: [L]=SOFTLOCKUP
[ 3432.669140][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3432.669142][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3432.669147][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3432.669150][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3432.669153][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3432.669155][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3432.669157][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3432.669159][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3432.669161][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3432.669163][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3432.669165][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3432.669168][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3432.669170][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3432.669172][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3432.669173][    C2] PKRU: 55555554
[ 3432.669174][    C2] Call Trace:
[ 3432.669177][    C2]  <TASK>
[ 3432.669179][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3432.669183][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3432.669187][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3432.669190][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3432.669195][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3432.669198][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3432.669201][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3432.669204][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3432.669209][ C2] xa_store (lib/xarray.c:1734) 
[ 3432.669213][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3432.669216][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3432.669221][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3432.669224][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3432.669227][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3432.669231][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3432.669235][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3432.669241][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3432.669244][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3432.669249][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3432.669253][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3432.669258][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3432.669264][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3432.669268][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3432.669273][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3432.669277][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3432.669281][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3432.669284][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3432.669287][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3432.669291][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3432.669296][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3432.669299][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3432.669304][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3432.669307][    C2] RIP: 0033:0x7f439756d93b
[ 3432.669310][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3432.669313][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3432.669316][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3432.669318][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3432.669320][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3432.669321][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3432.669323][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3440.669119][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3440.669124][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3440.669127][ C1] softirqs last disabled at (0): 0x0 
| [ 3440.669135][    C1] Tainted: [L]=SOFTLOCKUP
[ 3440.669137][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3440.669139][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 3440.669143][ C1] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 3440.669146][    C1] RSP: 0018:ffffc900034b79f8 EFLAGS: 00000282
[ 3440.669149][    C1] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3440.669151][    C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3440.669153][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3440.669155][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3440.669157][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3440.669159][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3440.669162][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3440.669165][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3440.669167][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3440.669169][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3440.669170][    C1] PKRU: 55555554
[ 3440.669171][    C1] Call Trace:
[ 3440.669173][    C1]  <TASK>
[ 3440.669175][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3440.669180][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3440.669183][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3440.669187][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3440.669191][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3440.669196][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3440.669199][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3440.669201][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3440.669204][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3440.669210][ C1] xa_store (lib/xarray.c:1734) 
[ 3440.669214][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3440.669217][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3440.669222][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3440.669225][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3440.669227][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3440.669232][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3440.669235][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3440.669240][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3440.669244][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3440.669249][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3440.669253][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3440.669258][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3440.669264][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3440.669268][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3440.669272][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3440.669276][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3440.669280][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3440.669284][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3440.669286][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3440.669290][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3440.669295][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3440.669299][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3440.669303][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3440.669310][    C1] RIP: 0033:0x7f439756d93b
[ 3440.669313][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3440.669316][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3440.669318][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3440.669321][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3440.669323][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3440.669324][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3440.669326][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3440.670136][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3440.670145][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3440.670149][ C3] softirqs last disabled at (0): 0x0 
| [ 3440.670161][    C3] Tainted: [L]=SOFTLOCKUP
[ 3440.670163][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3440.670165][ C3] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 3440.670171][ C3] Code: 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 7b 44 8d ff       	jmp    0xffffffffff8d4482
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 3440.670175][    C3] RSP: 0018:ffffc90000270a40 EFLAGS: 00000202
[ 3440.670178][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3440.670180][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3440.670182][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3440.670184][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3440.670186][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3440.670188][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3440.670191][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3440.670195][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3440.670197][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3440.670198][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3440.670200][    C3] PKRU: 55555554
[ 3440.670201][    C3] Call Trace:
[ 3440.670205][    C3]  <IRQ>
[ 3440.670207][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3440.670215][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3440.670219][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3440.670224][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3440.670227][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3440.670232][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3440.670236][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3440.670239][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3440.670244][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3440.670247][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3440.670250][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3440.670253][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3440.670255][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3440.670258][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3440.670264][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3440.670268][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3440.670271][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3440.670275][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3440.670280][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3440.670284][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3440.670290][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3440.670294][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3440.670301][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3440.670307][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3440.670310][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3440.670314][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3440.670317][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3440.670321][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3440.670323][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3440.670329][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3440.670332][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3440.670335][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3440.670340][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3440.670345][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3440.670348][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3440.670351][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3440.670354][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3440.670358][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3440.670362][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3440.670367][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3440.670370][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3440.670376][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3440.670380][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3440.670384][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3440.670388][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3440.670393][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3440.670399][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3440.670402][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3440.670405][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3440.670410][    C3]  </IRQ>
[ 3440.670411][    C3]  <TASK>
[ 3440.670412][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3440.670417][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3440.670421][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3440.670424][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3440.670428][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3440.670430][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3440.670431][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3440.670433][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3440.670435][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3440.670439][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3440.670446][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3440.670452][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3440.670455][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3440.670460][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3440.670462][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3440.670467][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3440.670469][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3440.670474][ C3] xas_alloc (lib/xarray.c:378) 
[ 3440.670479][ C3] xas_create (lib/xarray.c:685) 
[ 3440.670485][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3440.670489][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3440.670493][ C3] __xa_store (lib/xarray.c:1703) 
[ 3440.670497][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3440.670502][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3440.670505][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3440.670508][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3440.670513][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3440.670517][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3440.670521][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3440.670526][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3440.670528][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3440.670531][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3440.670535][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3440.670538][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3440.670543][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3440.670547][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3440.670552][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3440.670556][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3440.670560][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3440.670568][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3440.670572][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3440.670578][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3440.670582][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3440.670586][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3440.670590][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3440.670592][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3440.670596][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3440.670602][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3440.670606][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3440.670611][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3440.670614][    C3] RIP: 0033:0x7f439756d93b
[ 3440.670619][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3440.670622][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3440.670625][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3440.670627][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3440.670629][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3440.670631][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3440.670633][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3456.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3456.656123][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3456.656127][ C0] softirqs last disabled at (0): 0x0 
| [ 3456.656135][    C0] Tainted: [L]=SOFTLOCKUP
[ 3456.656137][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3456.656139][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:177 mm/kasan/generic.c:189) 
[ 3456.656142][ C0] Code: ff ff ff ff ff ff fe 48 39 c7 77 23 44 89 c2 e8 b7 e7 ff ff 83 f0 01 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff <48> 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	ff                   	(bad)
   3:	ff                   	(bad)
   4:	ff                   	(bad)
   5:	ff                   	(bad)
   6:	fe 48 39             	decb   0x39(%rax)
   9:	c7                   	(bad)
   a:	77 23                	ja     0x2f
   c:	44 89 c2             	mov    %r8d,%edx
   f:	e8 b7 e7 ff ff       	call   0xffffffffffffe7cb
  14:	83 f0 01             	xor    $0x1,%eax
  17:	5b                   	pop    %rbx
  18:	5d                   	pop    %rbp
  19:	41 5c                	pop    %r12
  1b:	c3                   	ret
  1c:	cc                   	int3
  1d:	cc                   	int3
  1e:	cc                   	int3
  1f:	cc                   	int3
  20:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  27:	7f ff ff 
  2a:*	48 39 c7             	cmp    %rax,%rdi		<-- trapping instruction
  2d:	76 dd                	jbe    0xc
  2f:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  34:	48 89 fd             	mov    %rdi,%rbp
  37:	48                   	rex.W
  38:	b8 00 00 00 00       	mov    $0x0,%eax
  3d:	00 fc                	add    %bh,%ah
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	48 39 c7             	cmp    %rax,%rdi
   3:	76 dd                	jbe    0xffffffffffffffe2
   5:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   a:	48 89 fd             	mov    %rdi,%rbp
   d:	48                   	rex.W
   e:	b8 00 00 00 00       	mov    $0x0,%eax
  13:	00 fc                	add    %bh,%ah
  15:	ff                   	.byte 0xff
[ 3456.656145][    C0] RSP: 0018:ffffc900034c79f8 EFLAGS: 00000282
[ 3456.656147][    C0] RAX: ffff7fffffffffff RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3456.656150][    C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3456.656152][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3456.656154][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3456.656156][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3456.656158][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3456.656160][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3456.656164][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3456.656166][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3456.656167][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3456.656169][    C0] PKRU: 55555554
[ 3456.656170][    C0] Call Trace:
[ 3456.656172][    C0]  <TASK>
[ 3456.656174][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3456.656179][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3456.656183][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3456.656186][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3456.656189][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3456.656194][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3456.656197][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3456.656200][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3456.656203][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3456.656208][ C0] xa_store (lib/xarray.c:1734) 
[ 3456.656212][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3456.656215][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3456.656220][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3456.656223][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3456.656226][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3456.656230][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3456.656234][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3456.656239][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3456.656243][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3456.656248][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3456.656252][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3456.656256][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3456.656263][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3456.656267][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3456.656271][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3456.656276][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3456.656279][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3456.656282][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3456.656285][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3456.656289][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3456.656294][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3456.656298][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3456.656302][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3456.656305][    C0] RIP: 0033:0x7f439756d93b
[ 3456.656308][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3456.656310][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3456.656313][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3456.656315][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3456.656317][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3456.656319][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3456.656321][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3460.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3460.669123][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3460.669127][ C2] softirqs last disabled at (0): 0x0 
| [ 3460.669135][    C2] Tainted: [L]=SOFTLOCKUP
[ 3460.669137][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3460.669139][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3460.669143][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3460.669146][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3460.669149][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3460.669151][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3460.669153][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3460.669155][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3460.669157][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3460.669159][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3460.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3460.669165][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3460.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3460.669168][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3460.669170][    C2] PKRU: 55555554
[ 3460.669171][    C2] Call Trace:
[ 3460.669176][    C2]  <TASK>
[ 3460.669179][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3460.669182][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3460.669186][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3460.669189][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3460.669194][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3460.669197][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3460.669200][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3460.669202][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3460.669208][ C2] xa_store (lib/xarray.c:1734) 
[ 3460.669212][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3460.669216][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3460.669220][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3460.669223][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3460.669226][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3460.669230][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3460.669234][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3460.669239][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3460.669243][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3460.669248][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3460.669252][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3460.669256][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3460.669263][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3460.669266][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3460.669271][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3460.669275][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3460.669278][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3460.669282][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3460.669285][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3460.669288][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3460.669294][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3460.669297][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3460.669302][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3460.669305][    C2] RIP: 0033:0x7f439756d93b
[ 3460.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3460.669311][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3460.669314][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3460.669316][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3460.669318][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3460.669320][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3460.669321][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3466.506654][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 3466.506935][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 3466.507172][    C1] NMI backtrace for cpu 1
| [ 3466.507183][    C1] Tainted: [L]=SOFTLOCKUP
[ 3466.507184][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3466.507186][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3466.507192][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3466.507195][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3466.507198][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3466.507200][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3466.507202][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3466.507204][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3466.507206][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3466.507208][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3466.507210][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3466.507214][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3466.507215][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3466.507217][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3466.507219][    C1] PKRU: 55555554
[ 3466.507220][    C1] Call Trace:
[ 3466.507221][    C1]  <TASK>
[ 3466.507224][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3466.507228][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3466.507232][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3466.507235][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3466.507240][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3466.507243][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3466.507246][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3466.507249][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3466.507254][ C1] xa_store (lib/xarray.c:1734) 
[ 3466.507258][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3466.507262][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3466.507267][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3466.507269][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3466.507272][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3466.507276][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3466.507279][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3466.507284][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3466.507288][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3466.507293][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3466.507297][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3466.507301][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3466.507307][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3466.507311][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3466.507315][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3466.507319][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3466.507323][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3466.507326][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3466.507329][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3466.507332][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3466.507337][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3466.507341][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3466.507345][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3466.507348][    C1] RIP: 0033:0x7f439756d93b
[ 3466.507351][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3466.507354][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3466.507356][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3466.507358][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3466.507360][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3466.507362][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3466.507364][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3466.507362][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 3466.507364][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3466.507370][    C1]  </TASK>
| [ 3466.508177][    C3] Tainted: [L]=SOFTLOCKUP
[ 3466.508179][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3466.508181][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3466.508186][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3466.508190][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3466.508193][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3466.508195][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3466.508197][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3466.508199][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3466.508201][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3466.508203][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3466.508205][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3466.508209][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3466.508211][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3466.508213][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3466.508215][    C3] PKRU: 55555554
[ 3466.508216][    C3] Call Trace:
[ 3466.508217][    C3]  <IRQ>
[ 3466.508218][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3466.508224][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3466.508228][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3466.508232][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3466.508235][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3466.508239][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3466.508242][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3466.508246][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3466.508249][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3466.508252][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3466.508255][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3466.508258][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3466.508261][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3466.508266][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3466.508270][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3466.508273][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3466.508276][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3466.508281][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3466.508285][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3466.508290][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3466.508294][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3466.508300][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3466.508305][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3466.508308][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3466.508311][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3466.508314][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3466.508318][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3466.508321][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3466.508326][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3466.508329][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3466.508333][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3466.508337][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3466.508341][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3466.508345][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3466.508348][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3466.508351][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3466.508355][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3466.508359][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3466.508364][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3466.508367][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3466.508372][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3466.508375][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3466.508379][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3466.508384][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3466.508387][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3466.508393][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3466.508397][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3466.508400][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3466.508403][    C3]  </IRQ>
[ 3466.508405][    C3]  <TASK>
[ 3466.508406][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3466.508410][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3466.508413][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3466.508416][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3466.508418][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3466.508420][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3466.508422][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3466.508423][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3466.508425][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3466.508429][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3466.508435][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3466.508440][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3466.508443][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3466.508447][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3466.508450][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3466.508454][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3466.508457][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3466.508461][ C3] xas_alloc (lib/xarray.c:378) 
[ 3466.508466][ C3] xas_create (lib/xarray.c:685) 
[ 3466.508471][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3466.508476][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3466.508479][ C3] __xa_store (lib/xarray.c:1703) 
[ 3466.508483][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3466.508488][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3466.508491][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3466.508494][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3466.508498][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3466.508502][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3466.508505][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3466.508510][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3466.508513][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3466.508515][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3466.508519][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3466.508523][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3466.508527][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3466.508531][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3466.508535][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3466.508539][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3466.508544][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3466.508550][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3466.508554][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3466.508559][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3466.508564][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3466.508568][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3466.508571][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3466.508574][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3466.508577][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3466.508583][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3466.508587][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3466.508591][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3466.508594][    C3] RIP: 0033:0x7f439756d93b
[ 3466.508599][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3466.508602][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3466.508605][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3466.508607][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3466.508608][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3466.508610][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3466.508612][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3484.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3484.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3484.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 3484.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 3484.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3484.656141][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3484.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3484.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3484.656151][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3484.656153][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3484.656155][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3484.656157][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3484.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3484.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3484.656164][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3484.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3484.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3484.656171][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3484.656173][    C0] PKRU: 55555554
[ 3484.656174][    C0] Call Trace:
[ 3484.656176][    C0]  <TASK>
[ 3484.656178][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3484.656182][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3484.656186][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3484.656189][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3484.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3484.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3484.656199][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3484.656202][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3484.656207][ C0] xa_store (lib/xarray.c:1734) 
[ 3484.656211][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3484.656214][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3484.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3484.656222][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3484.656225][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3484.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3484.656233][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3484.656238][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3484.656242][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3484.656246][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3484.656251][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3484.656255][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3484.656261][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3484.656265][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3484.656269][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3484.656274][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3484.656277][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3484.656280][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3484.656283][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3484.656287][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3484.656292][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3484.656296][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3484.656300][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3484.656303][    C0] RIP: 0033:0x7f439756d93b
[ 3484.656306][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3484.656309][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3484.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3484.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3484.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3484.656318][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3484.656320][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3488.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3488.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3488.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3488.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 3488.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3488.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3488.669145][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3488.669148][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3488.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3488.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3488.669155][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3488.669157][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3488.669159][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3488.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3488.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3488.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3488.669169][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3488.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3488.669172][    C2] PKRU: 55555554
[ 3488.669173][    C2] Call Trace:
[ 3488.669175][    C2]  <TASK>
[ 3488.669177][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3488.669181][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3488.669185][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3488.669188][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3488.669193][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3488.669197][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3488.669199][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3488.669202][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3488.669208][ C2] xa_store (lib/xarray.c:1734) 
[ 3488.669212][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3488.669215][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3488.669220][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3488.669223][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3488.669226][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3488.669230][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3488.669234][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3488.669239][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3488.669243][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3488.669247][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3488.669251][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3488.669256][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3488.669262][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3488.669266][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3488.669270][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3488.669274][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3488.669277][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3488.669281][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3488.669284][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3488.669287][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3488.669292][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3488.669296][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3488.669301][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3488.669304][    C2] RIP: 0033:0x7f439756d93b
[ 3488.669307][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3488.669310][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3488.669312][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3488.669315][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3488.669316][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3488.669318][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3488.669320][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3492.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3492.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3492.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 3492.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 3492.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3492.669141][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:103 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3492.669144][ C1] Code: 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d 59 01 48 89 da 48 29 ea <48> 83 fa 10 0f 8e c0 00 00 00 41 89 eb 41 83 e3 07 75 7d 48 85 d2
All code
========
   0:	89 fd                	mov    %edi,%ebp
   2:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   9:	fc ff df 
   c:	4d 89 d1             	mov    %r10,%r9
   f:	48 c1 ed 03          	shr    $0x3,%rbp
  13:	49 c1 e9 03          	shr    $0x3,%r9
  17:	48 01 c5             	add    %rax,%rbp
  1a:	49 01 c1             	add    %rax,%r9
  1d:	48 89 e8             	mov    %rbp,%rax
  20:	49 8d 59 01          	lea    0x1(%r9),%rbx
  24:	48 89 da             	mov    %rbx,%rdx
  27:	48 29 ea             	sub    %rbp,%rdx
  2a:*	48 83 fa 10          	cmp    $0x10,%rdx		<-- trapping instruction
  2e:	0f 8e c0 00 00 00    	jle    0xf4
  34:	41 89 eb             	mov    %ebp,%r11d
  37:	41 83 e3 07          	and    $0x7,%r11d
  3b:	75 7d                	jne    0xba
  3d:	48 85 d2             	test   %rdx,%rdx

Code starting with the faulting instruction
===========================================
   0:	48 83 fa 10          	cmp    $0x10,%rdx
   4:	0f 8e c0 00 00 00    	jle    0xca
   a:	41 89 eb             	mov    %ebp,%r11d
   d:	41 83 e3 07          	and    $0x7,%r11d
  11:	75 7d                	jne    0x90
  13:	48 85 d2             	test   %rdx,%rdx
[ 3492.669148][    C1] RSP: 0018:ffffc900034b79f8 EFLAGS: 00000202
[ 3492.669150][    C1] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 3492.669153][    C1] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3492.669154][    C1] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3492.669156][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3492.669158][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3492.669161][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3492.669163][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3492.669166][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3492.669168][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3492.669170][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3492.669172][    C1] PKRU: 55555554
[ 3492.669173][    C1] Call Trace:
[ 3492.669175][    C1]  <TASK>
[ 3492.669177][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3492.669182][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3492.669186][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3492.669190][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3492.669193][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3492.669198][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3492.669201][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3492.669204][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3492.669206][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3492.669212][ C1] xa_store (lib/xarray.c:1734) 
[ 3492.669216][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3492.669219][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3492.669224][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3492.669227][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3492.669229][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3492.669234][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3492.669237][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3492.669243][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3492.669246][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3492.669251][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3492.669255][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3492.669259][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3492.669265][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3492.669269][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3492.669273][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3492.669277][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3492.669281][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3492.669284][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3492.669287][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3492.669291][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3492.669296][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3492.669300][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3492.669304][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3492.669307][    C1] RIP: 0033:0x7f439756d93b
[ 3492.669310][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3492.669313][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3492.669316][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3492.669318][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3492.669320][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3492.669322][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3492.669324][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3492.670135][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3492.670144][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3492.670147][ C3] softirqs last disabled at (0): 0x0 
| [ 3492.670160][    C3] Tainted: [L]=SOFTLOCKUP
[ 3492.670162][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3492.670164][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3492.670172][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3492.670175][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3492.670179][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3492.670181][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3492.670183][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3492.670185][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3492.670187][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3492.670189][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3492.670191][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3492.670195][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3492.670197][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3492.670199][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3492.670201][    C3] PKRU: 55555554
[ 3492.670202][    C3] Call Trace:
[ 3492.670206][    C3]  <IRQ>
[ 3492.670208][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3492.670213][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3492.670218][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3492.670221][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3492.670226][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3492.670230][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3492.670234][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3492.670238][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3492.670241][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3492.670244][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3492.670247][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3492.670250][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3492.670253][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3492.670258][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3492.670263][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3492.670266][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3492.670270][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3492.670275][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3492.670279][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3492.670285][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3492.670290][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3492.670296][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3492.670301][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3492.670304][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3492.670307][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3492.670310][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3492.670314][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3492.670317][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3492.670323][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3492.670326][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3492.670329][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3492.670333][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3492.670338][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3492.670341][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3492.670344][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3492.670347][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3492.670351][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3492.670355][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3492.670360][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3492.670363][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3492.670368][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3492.670372][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3492.670375][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3492.670380][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3492.670385][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3492.670391][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3492.670394][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3492.670398][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3492.670402][    C3]  </IRQ>
[ 3492.670403][    C3]  <TASK>
[ 3492.670405][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3492.670410][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3492.670414][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3492.670417][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3492.670420][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3492.670422][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3492.670425][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3492.670426][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3492.670428][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3492.670433][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3492.670439][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3492.670445][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3492.670449][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3492.670454][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3492.670456][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3492.670461][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3492.670463][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3492.670468][ C3] xas_alloc (lib/xarray.c:378) 
[ 3492.670473][ C3] xas_create (lib/xarray.c:685) 
[ 3492.670479][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3492.670484][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3492.670488][ C3] __xa_store (lib/xarray.c:1703) 
[ 3492.670492][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3492.670497][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3492.670500][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3492.670503][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3492.670508][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3492.670512][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3492.670515][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3492.670521][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3492.670524][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3492.670527][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3492.670531][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3492.670535][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3492.670540][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3492.670544][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3492.670548][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3492.670552][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3492.670557][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3492.670564][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3492.670568][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3492.670573][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3492.670578][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3492.670581][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3492.670585][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3492.670587][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3492.670591][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3492.670597][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3492.670601][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3492.670606][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3492.670609][    C3] RIP: 0033:0x7f439756d93b
[ 3492.670614][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3492.670617][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3492.670620][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3492.670622][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3492.670624][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3492.670626][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3492.670628][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3512.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3512.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3512.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 3512.656136][    C0] Tainted: [L]=SOFTLOCKUP
[ 3512.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3512.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3512.656144][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3512.656147][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3512.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3512.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3512.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3512.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3512.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3512.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3512.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3512.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3512.656168][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3512.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3512.656171][    C0] PKRU: 55555554
[ 3512.656172][    C0] Call Trace:
[ 3512.656174][    C0]  <TASK>
[ 3512.656176][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3512.656179][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3512.656183][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3512.656186][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3512.656191][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3512.656194][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3512.656197][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3512.656199][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3512.656205][ C0] xa_store (lib/xarray.c:1734) 
[ 3512.656208][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3512.656212][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3512.656216][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3512.656219][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3512.656222][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3512.656226][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3512.656230][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3512.656235][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3512.656239][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3512.656244][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3512.656248][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3512.656252][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3512.656259][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3512.656263][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3512.656267][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3512.656271][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3512.656275][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3512.656278][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3512.656281][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3512.656284][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3512.656290][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3512.656294][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3512.656298][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3512.656301][    C0] RIP: 0033:0x7f439756d93b
[ 3512.656304][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3512.656306][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3512.656309][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3512.656311][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3512.656313][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3512.656315][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3512.656317][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3516.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3516.669123][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3516.669126][ C2] softirqs last disabled at (0): 0x0 
| [ 3516.669135][    C2] Tainted: [L]=SOFTLOCKUP
[ 3516.669136][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3516.669138][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3516.669142][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3516.669146][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3516.669148][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3516.669150][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3516.669152][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3516.669154][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3516.669156][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3516.669158][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3516.669161][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3516.669164][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3516.669166][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3516.669167][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3516.669169][    C2] PKRU: 55555554
[ 3516.669170][    C2] Call Trace:
[ 3516.669172][    C2]  <TASK>
[ 3516.669174][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3516.669178][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3516.669182][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3516.669185][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3516.669190][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3516.669193][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3516.669196][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3516.669199][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3516.669204][ C2] xa_store (lib/xarray.c:1734) 
[ 3516.669208][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3516.669211][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3516.669217][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3516.669219][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3516.669222][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3516.669227][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3516.669230][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3516.669235][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3516.669239][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3516.669243][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3516.669247][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3516.669251][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3516.669258][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3516.669262][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3516.669266][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3516.669270][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3516.669273][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3516.669277][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3516.669280][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3516.669283][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3516.669289][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3516.669293][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3516.669297][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3516.669300][    C2] RIP: 0033:0x7f439756d93b
[ 3516.669303][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3516.669305][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3516.669308][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3516.669310][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3516.669312][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3516.669314][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3516.669316][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3520.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3520.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3520.669129][ C1] softirqs last disabled at (0): 0x0 
| [ 3520.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 3520.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3520.669140][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 3520.669144][ C1] Code: 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff 5b b8 01 00 00 00 5d 41 5c <c3> cc cc cc cc 41 bc 08 00 00 00 45 29 dc 49 8d 14 2c eb 0c 48 83
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	48 85 d2             	test   %rdx,%rdx
   5:	0f 84 4c ff ff ff    	je     0xffffffffffffff57
   b:	41 83 e2 07          	and    $0x7,%r10d
   f:	49 39 d1             	cmp    %rdx,%r9
  12:	0f 85 34 ff ff ff    	jne    0xffffffffffffff4c
  18:	45 3a 11             	cmp    (%r9),%r10b
  1b:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff4c
  21:	5b                   	pop    %rbx
  22:	b8 01 00 00 00       	mov    $0x1,%eax
  27:	5d                   	pop    %rbp
  28:	41 5c                	pop    %r12
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  35:	45 29 dc             	sub    %r11d,%r12d
  38:	49 8d 14 2c          	lea    (%r12,%rbp,1),%rdx
  3c:	eb 0c                	jmp    0x4a
  3e:	48                   	rex.W
  3f:	83                   	.byte 0x83

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	41 bc 08 00 00 00    	mov    $0x8,%r12d
   b:	45 29 dc             	sub    %r11d,%r12d
   e:	49 8d 14 2c          	lea    (%r12,%rbp,1),%rdx
  12:	eb 0c                	jmp    0x20
  14:	48                   	rex.W
  15:	83                   	.byte 0x83
[ 3520.669147][    C1] RSP: 0018:ffffc900034b7a10 EFLAGS: 00000246
[ 3520.669149][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3520.669151][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3520.669153][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3520.669155][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3520.669157][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3520.669159][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3520.669162][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3520.669165][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3520.669167][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3520.669169][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3520.669170][    C1] PKRU: 55555554
[ 3520.669171][    C1] Call Trace:
[ 3520.669173][    C1]  <TASK>
[ 3520.669174][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3520.669179][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3520.669183][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3520.669187][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3520.669190][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3520.669195][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3520.669198][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3520.669200][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3520.669203][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3520.669208][ C1] xa_store (lib/xarray.c:1734) 
[ 3520.669212][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3520.669215][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3520.669220][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3520.669223][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3520.669226][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3520.669230][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3520.669234][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3520.669239][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3520.669243][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3520.669247][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3520.669251][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3520.669255][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3520.669262][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3520.669266][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3520.669270][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3520.669274][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3520.669278][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3520.669281][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3520.669284][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3520.669287][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3520.669293][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3520.669296][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3520.669301][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3520.669304][    C1] RIP: 0033:0x7f439756d93b
[ 3520.669307][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3520.669309][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3520.669312][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3520.669314][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3520.669317][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3520.669318][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3520.669320][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3520.670135][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3520.670143][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3520.670147][ C3] softirqs last disabled at (0): 0x0 
| [ 3520.670159][    C3] Tainted: [L]=SOFTLOCKUP
[ 3520.670160][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3520.670162][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3520.670170][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3520.670173][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3520.670176][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3520.670178][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3520.670180][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3520.670182][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3520.670184][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3520.670186][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3520.670189][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3520.670193][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3520.670195][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3520.670196][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3520.670198][    C3] PKRU: 55555554
[ 3520.670199][    C3] Call Trace:
[ 3520.670204][    C3]  <IRQ>
[ 3520.670206][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3520.670211][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3520.670216][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3520.670220][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3520.670224][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3520.670229][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3520.670232][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3520.670236][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3520.670239][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3520.670243][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3520.670245][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3520.670248][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3520.670251][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3520.670256][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3520.670261][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3520.670264][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3520.670268][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3520.670274][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3520.670278][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3520.670283][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3520.670288][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3520.670295][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3520.670301][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3520.670304][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3520.670307][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3520.670310][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3520.670314][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3520.670316][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3520.670322][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3520.670325][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3520.670328][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3520.670332][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3520.670337][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3520.670340][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3520.670343][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3520.670346][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3520.670350][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3520.670354][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3520.670358][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3520.670361][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3520.670367][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3520.670371][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3520.670374][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3520.670380][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3520.670384][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3520.670390][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3520.670394][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3520.670397][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3520.670402][    C3]  </IRQ>
[ 3520.670403][    C3]  <TASK>
[ 3520.670404][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3520.670410][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3520.670414][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3520.670417][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3520.670420][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3520.670422][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3520.670424][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3520.670427][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3520.670428][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3520.670433][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3520.670439][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3520.670445][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3520.670449][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3520.670453][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3520.670456][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3520.670460][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3520.670463][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3520.670468][ C3] xas_alloc (lib/xarray.c:378) 
[ 3520.670472][ C3] xas_create (lib/xarray.c:685) 
[ 3520.670478][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3520.670483][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3520.670487][ C3] __xa_store (lib/xarray.c:1703) 
[ 3520.670491][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3520.670496][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3520.670498][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3520.670501][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3520.670506][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3520.670510][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3520.670514][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3520.670519][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3520.670522][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3520.670524][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3520.670529][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3520.670532][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3520.670537][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3520.670541][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3520.670545][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3520.670549][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3520.670554][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3520.670562][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3520.670565][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3520.670571][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3520.670575][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3520.670578][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3520.670582][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3520.670584][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3520.670588][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3520.670594][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3520.670598][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3520.670603][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3520.670607][    C3] RIP: 0033:0x7f439756d93b
[ 3520.670611][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3520.670614][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3520.670618][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3520.670620][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3520.670622][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3520.670624][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3520.670626][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3540.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3540.656123][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3540.656126][ C0] softirqs last disabled at (0): 0x0 
| [ 3540.656134][    C0] Tainted: [L]=SOFTLOCKUP
[ 3540.656136][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3540.656138][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3540.656142][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3540.656145][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3540.656147][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3540.656150][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3540.656152][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3540.656154][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3540.656156][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3540.656158][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3540.656160][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3540.656163][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3540.656165][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3540.656167][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3540.656168][    C0] PKRU: 55555554
[ 3540.656170][    C0] Call Trace:
[ 3540.656171][    C0]  <TASK>
[ 3540.656174][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3540.656177][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3540.656181][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3540.656184][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3540.656189][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3540.656192][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3540.656194][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3540.656197][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3540.656202][ C0] xa_store (lib/xarray.c:1734) 
[ 3540.656206][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3540.656209][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3540.656214][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3540.656217][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3540.656220][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3540.656224][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3540.656227][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3540.656233][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3540.656236][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3540.656241][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3540.656245][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3540.656249][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3540.656256][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3540.656260][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3540.656264][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3540.656268][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3540.656271][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3540.656275][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3540.656278][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3540.656282][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3540.656287][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3540.656291][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3540.656295][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3540.656298][    C0] RIP: 0033:0x7f439756d93b
[ 3540.656301][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3540.656304][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3540.656306][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3540.656309][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3540.656311][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3540.656312][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3540.656314][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3544.520878][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 3544.521155][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 3544.521393][    C1] NMI backtrace for cpu 1
| [ 3544.521404][    C1] Tainted: [L]=SOFTLOCKUP
[ 3544.521405][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3544.521407][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3544.521413][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3544.521416][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3544.521420][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3544.521423][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3544.521425][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3544.521427][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3544.521429][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3544.521431][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3544.521433][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3544.521436][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3544.521438][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3544.521440][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3544.521442][    C1] PKRU: 55555554
[ 3544.521443][    C1] Call Trace:
[ 3544.521445][    C1]  <TASK>
[ 3544.521447][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3544.521451][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3544.521454][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3544.521458][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3544.521463][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3544.521466][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3544.521469][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3544.521471][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3544.521477][ C1] xa_store (lib/xarray.c:1734) 
[ 3544.521481][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3544.521484][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3544.521489][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3544.521491][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3544.521494][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3544.521498][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3544.521502][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3544.521507][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3544.521510][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3544.521515][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3544.521519][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3544.521523][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3544.521529][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3544.521533][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3544.521537][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3544.521542][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3544.521545][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3544.521548][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3544.521551][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3544.521555][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3544.521560][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3544.521563][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3544.521567][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3544.521571][    C1] RIP: 0033:0x7f439756d93b
[ 3544.521573][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3544.521576][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3544.521579][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3544.521581][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3544.521582][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3544.521584][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3544.521586][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3544.521584][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 3544.521586][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3544.521592][    C1]  </TASK>
| [ 3544.522400][    C3] Tainted: [L]=SOFTLOCKUP
[ 3544.522401][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3544.522404][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3544.522409][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3544.522412][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3544.522415][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3544.522418][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3544.522420][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3544.522422][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3544.522424][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3544.522427][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3544.522429][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3544.522434][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3544.522436][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3544.522437][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3544.522439][    C3] PKRU: 55555554
[ 3544.522441][    C3] Call Trace:
[ 3544.522442][    C3]  <IRQ>
[ 3544.522443][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3544.522448][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3544.522452][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3544.522455][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3544.522459][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3544.522463][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3544.522467][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3544.522471][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3544.522474][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3544.522477][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3544.522479][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3544.522482][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3544.522485][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3544.522491][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3544.522494][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3544.522497][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3544.522500][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3544.522506][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3544.522509][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3544.522515][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3544.522518][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3544.522524][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3544.522529][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3544.522531][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3544.522534][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3544.522538][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3544.522541][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3544.522544][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3544.522549][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3544.522552][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3544.522555][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3544.522560][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3544.522564][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3544.522567][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3544.522570][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3544.522574][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3544.522577][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3544.522581][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3544.522586][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3544.522589][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3544.522594][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3544.522598][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3544.522601][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3544.522606][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3544.522610][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3544.522615][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3544.522619][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3544.522622][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3544.522625][    C3]  </IRQ>
[ 3544.522626][    C3]  <TASK>
[ 3544.522628][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3544.522632][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3544.522635][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3544.522638][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3544.522640][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3544.522642][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3544.522643][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3544.522645][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3544.522647][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3544.522651][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3544.522657][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3544.522662][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3544.522665][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3544.522670][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3544.522673][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3544.522677][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3544.522680][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3544.522685][ C3] xas_alloc (lib/xarray.c:378) 
[ 3544.522690][ C3] xas_create (lib/xarray.c:685) 
[ 3544.522696][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3544.522700][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3544.522704][ C3] __xa_store (lib/xarray.c:1703) 
[ 3544.522707][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3544.522712][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3544.522715][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3544.522718][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3544.522722][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3544.522726][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3544.522729][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3544.522734][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3544.522737][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3544.522739][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3544.522743][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3544.522747][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3544.522752][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3544.522756][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3544.522760][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3544.522764][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3544.522769][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3544.522776][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3544.522779][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3544.522784][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3544.522789][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3544.522793][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3544.522796][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3544.522799][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3544.522802][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3544.522808][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3544.522812][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3544.522816][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3544.522819][    C3] RIP: 0033:0x7f439756d93b
[ 3544.522824][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3544.522826][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3544.522829][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3544.522831][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3544.522833][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3544.522835][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3544.522836][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3544.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3544.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3544.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3544.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 3544.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3544.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3544.669145][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3544.669148][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3544.669151][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3544.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3544.669155][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3544.669157][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3544.669159][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3544.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3544.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3544.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3544.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3544.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3544.669172][    C2] PKRU: 55555554
[ 3544.669173][    C2] Call Trace:
[ 3544.669175][    C2]  <TASK>
[ 3544.669178][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3544.669182][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3544.669186][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3544.669189][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3544.669194][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3544.669197][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3544.669200][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3544.669203][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3544.669208][ C2] xa_store (lib/xarray.c:1734) 
[ 3544.669212][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3544.669216][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3544.669221][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3544.669224][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3544.669226][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3544.669231][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3544.669234][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3544.669239][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3544.669243][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3544.669248][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3544.669252][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3544.669256][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3544.669262][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3544.669266][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3544.669270][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3544.669274][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3544.669278][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3544.669282][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3544.669284][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3544.669288][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3544.669294][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3544.669297][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3544.669302][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3544.669305][    C2] RIP: 0033:0x7f439756d93b
[ 3544.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3544.669311][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3544.669314][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3544.669316][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3544.669318][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3544.669320][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3544.669321][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3568.656132][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3568.656139][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3568.656143][ C0] softirqs last disabled at (0): 0x0 
| [ 3568.656155][    C0] Tainted: [L]=SOFTLOCKUP
[ 3568.656157][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3568.656158][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3568.656167][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3568.656170][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3568.656173][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3568.656175][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3568.656177][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3568.656179][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3568.656182][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3568.656183][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3568.656186][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3568.656190][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3568.656191][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3568.656193][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3568.656195][    C0] PKRU: 55555554
[ 3568.656196][    C0] Call Trace:
[ 3568.656199][    C0]  <TASK>
[ 3568.656203][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3568.656207][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3568.656211][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3568.656215][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3568.656222][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3568.656225][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3568.656227][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3568.656230][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3568.656236][ C0] xa_store (lib/xarray.c:1734) 
[ 3568.656240][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3568.656245][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3568.656250][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3568.656253][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3568.656256][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3568.656262][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3568.656266][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3568.656273][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3568.656276][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3568.656281][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3568.656286][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3568.656291][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3568.656299][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3568.656303][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3568.656308][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3568.656313][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3568.656316][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3568.656321][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3568.656324][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3568.656328][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3568.656334][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3568.656338][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3568.656343][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3568.656348][    C0] RIP: 0033:0x7f439756d93b
[ 3568.656351][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3568.656354][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3568.656357][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3568.656359][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3568.656361][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3568.656363][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3568.656365][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3568.669139][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3568.669145][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3568.669149][ C1] softirqs last disabled at (0): 0x0 
| [ 3568.669158][    C1] Tainted: [L]=SOFTLOCKUP
[ 3568.669160][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3568.669162][ C1] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 3568.669168][ C1] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 3568.669171][    C1] RSP: 0018:ffffc900034b7a10 EFLAGS: 00000202
[ 3568.669174][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3568.669176][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3568.669178][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3568.669180][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3568.669182][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3568.669184][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3568.669187][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3568.669190][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3568.669192][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3568.669194][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3568.669195][    C1] PKRU: 55555554
[ 3568.669196][    C1] Call Trace:
[ 3568.669198][    C1]  <TASK>
[ 3568.669200][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3568.669207][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3568.669210][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3568.669215][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3568.669218][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3568.669223][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3568.669227][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3568.669230][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3568.669233][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3568.669238][ C1] xa_store (lib/xarray.c:1734) 
[ 3568.669242][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3568.669246][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3568.669251][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3568.669254][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3568.669257][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3568.669261][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3568.669265][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3568.669270][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3568.669274][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3568.669279][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3568.669284][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3568.669288][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3568.669295][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3568.669299][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3568.669303][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3568.669308][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3568.669311][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3568.669315][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3568.669318][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3568.669322][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3568.669327][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3568.669331][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3568.669335][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3568.669339][    C1] RIP: 0033:0x7f439756d93b
[ 3568.669342][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3568.669346][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3568.669349][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3568.669351][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3568.669353][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3568.669355][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3568.669357][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3568.670138][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3568.670146][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3568.670150][ C3] softirqs last disabled at (0): 0x0 
| [ 3568.670164][    C3] Tainted: [L]=SOFTLOCKUP
[ 3568.670165][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3568.670168][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 3568.670175][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 3568.670178][    C3] RSP: 0018:ffffc90000270a30 EFLAGS: 00000282
[ 3568.670181][    C3] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3568.670183][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3568.670185][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3568.670187][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3568.670190][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3568.670192][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3568.670195][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3568.670199][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3568.670201][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3568.670203][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3568.670204][    C3] PKRU: 55555554
[ 3568.670206][    C3] Call Trace:
[ 3568.670209][    C3]  <IRQ>
[ 3568.670213][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3568.670220][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3568.670225][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3568.670229][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3568.670232][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3568.670237][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3568.670241][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3568.670245][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3568.670249][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3568.670253][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3568.670256][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3568.670259][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3568.670261][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3568.670265][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3568.670270][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3568.670275][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3568.670279][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3568.670282][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3568.670288][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3568.670292][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3568.670298][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3568.670302][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3568.670308][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3568.670314][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3568.670317][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3568.670320][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3568.670324][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3568.670327][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3568.670330][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3568.670336][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3568.670339][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3568.670342][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3568.670347][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3568.670352][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3568.670355][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3568.670359][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3568.670362][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3568.670366][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3568.670370][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3568.670375][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3568.670378][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3568.670383][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3568.670387][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3568.670391][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3568.670396][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3568.670401][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3568.670407][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3568.670411][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3568.670414][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3568.670418][    C3]  </IRQ>
[ 3568.670419][    C3]  <TASK>
[ 3568.670421][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3568.670426][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3568.670430][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3568.670433][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3568.670436][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3568.670438][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3568.670440][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3568.670442][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3568.670445][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3568.670449][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3568.670455][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3568.670461][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3568.670465][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3568.670470][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3568.670472][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3568.670477][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3568.670479][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3568.670485][ C3] xas_alloc (lib/xarray.c:378) 
[ 3568.670489][ C3] xas_create (lib/xarray.c:685) 
[ 3568.670495][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3568.670500][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3568.670504][ C3] __xa_store (lib/xarray.c:1703) 
[ 3568.670508][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3568.670513][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3568.670516][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3568.670519][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3568.670524][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3568.670528][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3568.670531][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3568.670536][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3568.670539][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3568.670542][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3568.670546][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3568.670549][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3568.670554][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3568.670558][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3568.670562][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3568.670567][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3568.670571][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3568.670579][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3568.670583][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3568.670589][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3568.670594][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3568.670597][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3568.670601][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3568.670603][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3568.670607][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3568.670613][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3568.670617][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3568.670622][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3568.670625][    C3] RIP: 0033:0x7f439756d93b
[ 3568.670629][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3568.670632][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3568.670635][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3568.670637][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3568.670638][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3568.670640][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3568.670642][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3572.669129][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3572.669136][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3572.669139][ C2] softirqs last disabled at (0): 0x0 
| [ 3572.669151][    C2] Tainted: [L]=SOFTLOCKUP
[ 3572.669152][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3572.669154][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3572.669162][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3572.669166][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3572.669169][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3572.669171][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3572.669173][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3572.669175][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3572.669177][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3572.669179][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3572.669181][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3572.669185][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3572.669187][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3572.669188][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3572.669190][    C2] PKRU: 55555554
[ 3572.669191][    C2] Call Trace:
[ 3572.669195][    C2]  <TASK>
[ 3572.669198][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3572.669202][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3572.669206][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3572.669210][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3572.669216][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3572.669220][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3572.669222][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3572.669225][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3572.669232][ C2] xa_store (lib/xarray.c:1734) 
[ 3572.669236][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3572.669240][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3572.669245][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3572.669248][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3572.669251][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3572.669256][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3572.669260][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3572.669267][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3572.669271][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3572.669275][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3572.669280][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3572.669284][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3572.669292][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3572.669296][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3572.669301][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3572.669306][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3572.669309][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3572.669314][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3572.669316][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3572.669320][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3572.669326][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3572.669330][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3572.669335][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3572.669340][    C2] RIP: 0033:0x7f439756d93b
[ 3572.669344][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3572.669347][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3572.669350][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3572.669352][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3572.669354][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3572.669356][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3572.669358][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3596.656123][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3596.656129][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3596.656132][ C0] softirqs last disabled at (0): 0x0 
| [ 3596.656142][    C0] Tainted: [L]=SOFTLOCKUP
[ 3596.656143][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3596.656146][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:104 kernel/locking/qspinlock.c:141) 
[ 3596.656151][ C0] Code: c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44 24 40 <85> c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00 00 e8 60 b8 c7 fd be
All code
========
   0:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   4:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
   a:	48 89 ef             	mov    %rbp,%rdi
   d:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86f
  12:	41 0f b6 06          	movzbl (%r14),%eax
  16:	41 38 c5             	cmp    %al,%r13b
  19:	7c 08                	jl     0x23
  1b:	84 c0                	test   %al,%al
  1d:	0f 85 8d 07 00 00    	jne    0x7b0
  23:	8b 45 00             	mov    0x0(%rbp),%eax
  26:	89 44 24 40          	mov    %eax,0x40(%rsp)
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 6e 01 00 00    	jne    0x1a0
  32:	48 89 ef             	mov    %rbp,%rdi
  35:	be 04 00 00 00       	mov    $0x4,%esi
  3a:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b89f
  3f:	be                   	.byte 0xbe

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 6e 01 00 00    	jne    0x176
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	be 04 00 00 00       	mov    $0x4,%esi
  10:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b875
  15:	be                   	.byte 0xbe
[ 3596.656154][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000246
[ 3596.656157][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3596.656159][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3596.656161][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3596.656163][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3596.656165][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3596.656167][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3596.656170][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3596.656173][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3596.656175][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3596.656177][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3596.656178][    C0] PKRU: 55555554
[ 3596.656180][    C0] Call Trace:
[ 3596.656182][    C0]  <TASK>
[ 3596.656185][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3596.656188][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3596.656192][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3596.656195][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3596.656201][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3596.656204][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3596.656207][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3596.656209][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3596.656215][ C0] xa_store (lib/xarray.c:1734) 
[ 3596.656219][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3596.656223][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3596.656228][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3596.656231][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3596.656234][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3596.656240][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3596.656243][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3596.656249][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3596.656253][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3596.656258][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3596.656262][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3596.656267][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3596.656275][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3596.656278][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3596.656283][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3596.656288][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3596.656291][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3596.656295][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3596.656297][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3596.656301][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3596.656307][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3596.656310][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3596.656315][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3596.656318][    C0] RIP: 0033:0x7f439756d93b
[ 3596.656321][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3596.656324][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3596.656327][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3596.656329][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3596.656331][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3596.656333][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3596.656335][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3596.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3596.669124][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3596.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 3596.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 3596.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3596.669141][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3596.669145][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3596.669148][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3596.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3596.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3596.669155][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3596.669157][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3596.669159][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3596.669161][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3596.669164][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3596.669168][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3596.669169][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3596.669171][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3596.669173][    C1] PKRU: 55555554
[ 3596.669174][    C1] Call Trace:
[ 3596.669176][    C1]  <TASK>
[ 3596.669178][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3596.669182][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3596.669186][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3596.669189][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3596.669194][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3596.669197][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3596.669199][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3596.669202][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3596.669207][ C1] xa_store (lib/xarray.c:1734) 
[ 3596.669211][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3596.669215][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3596.669220][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3596.669223][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3596.669226][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3596.669230][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3596.669233][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3596.669239][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3596.669243][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3596.669247][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3596.669251][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3596.669255][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3596.669262][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3596.669266][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3596.669270][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3596.669274][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3596.669278][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3596.669281][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3596.669284][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3596.669288][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3596.669293][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3596.669297][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3596.669301][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3596.669304][    C1] RIP: 0033:0x7f439756d93b
[ 3596.669307][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3596.669310][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3596.669312][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3596.669314][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3596.669316][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3596.669318][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3596.669320][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3596.670136][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3596.670144][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3596.670148][ C3] softirqs last disabled at (0): 0x0 
| [ 3596.670160][    C3] Tainted: [L]=SOFTLOCKUP
[ 3596.670161][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3596.670164][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3596.670172][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3596.670175][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3596.670179][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3596.670181][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3596.670183][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3596.670186][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3596.670188][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3596.670190][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3596.670192][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3596.670196][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3596.670198][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3596.670200][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3596.670202][    C3] PKRU: 55555554
[ 3596.670203][    C3] Call Trace:
[ 3596.670207][    C3]  <IRQ>
[ 3596.670209][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3596.670214][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3596.670220][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3596.670223][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3596.670228][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3596.670232][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3596.670235][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3596.670239][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3596.670243][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3596.670246][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3596.670249][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3596.670251][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3596.670254][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3596.670260][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3596.670265][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3596.670268][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3596.670272][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3596.670277][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3596.670282][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3596.670287][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3596.670292][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3596.670299][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3596.670305][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3596.670308][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3596.670311][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3596.670314][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3596.670318][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3596.670321][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3596.670326][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3596.670329][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3596.670332][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3596.670337][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3596.670342][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3596.670345][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3596.670348][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3596.670351][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3596.670355][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3596.670360][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3596.670365][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3596.670368][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3596.670373][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3596.670377][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3596.670381][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3596.670386][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3596.670390][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3596.670396][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3596.670400][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3596.670403][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3596.670407][    C3]  </IRQ>
[ 3596.670408][    C3]  <TASK>
[ 3596.670410][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3596.670416][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3596.670420][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3596.670423][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3596.670426][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3596.670428][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3596.670430][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3596.670432][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3596.670434][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3596.670439][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3596.670445][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3596.670451][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3596.670456][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3596.670460][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3596.670463][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3596.670468][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3596.670471][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3596.670476][ C3] xas_alloc (lib/xarray.c:378) 
[ 3596.670480][ C3] xas_create (lib/xarray.c:685) 
[ 3596.670487][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3596.670491][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3596.670495][ C3] __xa_store (lib/xarray.c:1703) 
[ 3596.670499][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3596.670504][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3596.670507][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3596.670510][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3596.670515][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3596.670519][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3596.670522][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3596.670527][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3596.670530][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3596.670533][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3596.670537][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3596.670541][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3596.670546][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3596.670550][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3596.670555][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3596.670559][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3596.670564][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3596.670572][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3596.670577][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3596.670582][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3596.670586][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3596.670590][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3596.670593][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3596.670596][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3596.670600][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3596.670606][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3596.670610][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3596.670615][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3596.670618][    C3] RIP: 0033:0x7f439756d93b
[ 3596.670623][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3596.670626][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3596.670629][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3596.670631][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3596.670633][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3596.670635][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3596.670636][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3600.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3600.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3600.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3600.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 3600.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3600.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3600.669145][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3600.669148][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3600.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3600.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3600.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3600.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3600.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3600.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3600.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3600.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3600.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3600.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3600.669171][    C2] PKRU: 55555554
[ 3600.669172][    C2] Call Trace:
[ 3600.669174][    C2]  <TASK>
[ 3600.669177][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3600.669181][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3600.669184][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3600.669187][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3600.669192][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3600.669195][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3600.669198][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3600.669201][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3600.669206][ C2] xa_store (lib/xarray.c:1734) 
[ 3600.669210][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3600.669213][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3600.669219][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3600.669222][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3600.669224][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3600.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3600.669232][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3600.669238][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3600.669242][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3600.669246][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3600.669251][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3600.669255][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3600.669262][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3600.669265][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3600.669269][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3600.669274][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3600.669277][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3600.669281][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3600.669284][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3600.669287][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3600.669292][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3600.669297][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3600.669301][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3600.669304][    C2] RIP: 0033:0x7f439756d93b
[ 3600.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3600.669310][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3600.669313][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3600.669316][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3600.669317][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3600.669319][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3600.669321][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3622.534312][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 3622.534751][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 3622.534997][    C1] NMI backtrace for cpu 1
| [ 3622.535007][    C1] Tainted: [L]=SOFTLOCKUP
[ 3622.535008][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3622.535010][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3622.535016][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3622.535019][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3622.535021][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3622.535023][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3622.535025][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3622.535027][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3622.535029][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3622.535031][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3622.535033][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3622.535036][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3622.535038][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3622.535040][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3622.535042][    C1] PKRU: 55555554
[ 3622.535043][    C1] Call Trace:
[ 3622.535044][    C1]  <TASK>
[ 3622.535046][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3622.535050][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3622.535054][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3622.535057][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3622.535062][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3622.535065][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3622.535068][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3622.535071][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3622.535076][ C1] xa_store (lib/xarray.c:1734) 
[ 3622.535080][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3622.535083][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3622.535088][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3622.535091][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3622.535094][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3622.535098][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3622.535102][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3622.535107][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3622.535111][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3622.535115][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3622.535119][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3622.535124][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3622.535130][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3622.535134][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3622.535138][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3622.535142][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3622.535146][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3622.535149][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3622.535152][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3622.535155][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3622.535160][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3622.535164][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3622.535168][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3622.535171][    C1] RIP: 0033:0x7f439756d93b
[ 3622.535174][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3622.535176][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3622.535180][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3622.535181][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3622.535183][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3622.535185][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3622.535187][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3622.535185][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 3622.535187][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3622.535193][    C1]  </TASK>
| [ 3622.536001][    C3] Tainted: [L]=SOFTLOCKUP
[ 3622.536003][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3622.536005][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3622.536010][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3622.536014][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3622.536017][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3622.536020][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3622.536022][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3622.536023][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3622.536025][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3622.536027][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3622.536030][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3622.536034][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3622.536036][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3622.536038][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3622.536040][    C3] PKRU: 55555554
[ 3622.536041][    C3] Call Trace:
[ 3622.536042][    C3]  <IRQ>
[ 3622.536044][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3622.536049][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3622.536054][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3622.536057][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3622.536060][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3622.536066][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3622.536069][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3622.536073][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3622.536077][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3622.536080][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3622.536083][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3622.536086][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3622.536088][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3622.536094][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3622.536097][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3622.536100][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3622.536103][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3622.536109][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3622.536112][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3622.536118][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3622.536121][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3622.536127][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3622.536132][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3622.536135][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3622.536138][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3622.536141][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3622.536144][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3622.536147][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3622.536153][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3622.536155][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3622.536158][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3622.536163][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3622.536167][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3622.536170][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3622.536173][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3622.536177][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3622.536180][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3622.536185][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3622.536189][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3622.536192][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3622.536197][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3622.536201][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3622.536204][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3622.536209][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3622.536213][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3622.536219][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3622.536222][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3622.536226][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3622.536229][    C3]  </IRQ>
[ 3622.536230][    C3]  <TASK>
[ 3622.536231][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3622.536235][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3622.536238][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3622.536240][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3622.536243][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3622.536245][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3622.536247][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3622.536248][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3622.536250][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3622.536254][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3622.536259][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3622.536264][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3622.536268][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3622.536272][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3622.536275][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3622.536279][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3622.536282][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3622.536286][ C3] xas_alloc (lib/xarray.c:378) 
[ 3622.536291][ C3] xas_create (lib/xarray.c:685) 
[ 3622.536296][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3622.536301][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3622.536304][ C3] __xa_store (lib/xarray.c:1703) 
[ 3622.536308][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3622.536313][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3622.536315][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3622.536318][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3622.536323][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3622.536327][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3622.536330][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3622.536334][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3622.536337][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3622.536340][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3622.536344][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3622.536347][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3622.536352][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3622.536356][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3622.536360][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3622.536364][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3622.536369][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3622.536375][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3622.536379][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3622.536384][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3622.536390][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3622.536393][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3622.536396][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3622.536399][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3622.536402][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3622.536408][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3622.536412][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3622.536417][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3622.536420][    C3] RIP: 0033:0x7f439756d93b
[ 3622.536424][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3622.536427][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3622.536429][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3622.536431][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3622.536433][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3622.536434][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3622.536436][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3624.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3624.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3624.656129][ C0] softirqs last disabled at (0): 0x0 
| [ 3624.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 3624.656139][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3624.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3624.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3624.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3624.656151][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3624.656153][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3624.656155][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3624.656157][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3624.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3624.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3624.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3624.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3624.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3624.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3624.656172][    C0] PKRU: 55555554
[ 3624.656173][    C0] Call Trace:
[ 3624.656175][    C0]  <TASK>
[ 3624.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3624.656181][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3624.656185][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3624.656188][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3624.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3624.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3624.656199][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3624.656202][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3624.656207][ C0] xa_store (lib/xarray.c:1734) 
[ 3624.656211][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3624.656214][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3624.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3624.656222][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3624.656225][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3624.656230][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3624.656233][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3624.656238][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3624.656242][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3624.656246][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3624.656250][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3624.656254][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3624.656261][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3624.656264][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3624.656269][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3624.656273][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3624.656276][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3624.656280][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3624.656282][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3624.656286][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3624.656291][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3624.656295][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3624.656299][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3624.656302][    C0] RIP: 0033:0x7f439756d93b
[ 3624.656305][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3624.656308][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3624.656311][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3624.656313][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3624.656315][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3624.656317][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3624.656319][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3628.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3628.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3628.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3628.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 3628.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3628.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3628.669145][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3628.669148][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3628.669151][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3628.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3628.669155][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3628.669157][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3628.669159][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3628.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3628.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3628.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3628.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3628.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3628.669172][    C2] PKRU: 55555554
[ 3628.669173][    C2] Call Trace:
[ 3628.669175][    C2]  <TASK>
[ 3628.669177][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3628.669181][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3628.669185][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3628.669187][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3628.669192][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3628.669195][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3628.669198][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3628.669201][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3628.669206][ C2] xa_store (lib/xarray.c:1734) 
[ 3628.669210][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3628.669214][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3628.669218][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3628.669221][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3628.669224][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3628.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3628.669232][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3628.669238][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3628.669242][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3628.669247][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3628.669250][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3628.669255][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3628.669261][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3628.669265][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3628.669269][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3628.669273][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3628.669277][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3628.669281][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3628.669283][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3628.669287][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3628.669292][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3628.669296][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3628.669300][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3628.669304][    C2] RIP: 0033:0x7f439756d93b
[ 3628.669307][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3628.669309][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3628.669312][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3628.669314][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3628.669316][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3628.669318][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3628.669320][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3648.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3648.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3648.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 3648.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 3648.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3648.669141][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3648.669145][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3648.669149][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3648.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3648.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3648.669155][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3648.669157][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3648.669160][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3648.669161][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3648.669164][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3648.669167][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3648.669169][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3648.669170][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3648.669172][    C1] PKRU: 55555554
[ 3648.669173][    C1] Call Trace:
[ 3648.669175][    C1]  <TASK>
[ 3648.669177][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3648.669181][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3648.669185][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3648.669188][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3648.669193][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3648.669196][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3648.669199][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3648.669202][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3648.669207][ C1] xa_store (lib/xarray.c:1734) 
[ 3648.669211][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3648.669215][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3648.669219][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3648.669222][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3648.669225][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3648.669230][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3648.669233][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3648.669238][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3648.669242][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3648.669247][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3648.669251][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3648.669255][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3648.669261][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3648.669265][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3648.669270][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3648.669274][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3648.669277][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3648.669281][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3648.669284][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3648.669287][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3648.669292][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3648.669296][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3648.669301][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3648.669304][    C1] RIP: 0033:0x7f439756d93b
[ 3648.669307][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3648.669310][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3648.669313][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3648.669315][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3648.669317][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3648.669319][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3648.669321][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3648.670152][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3648.670159][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3648.670163][ C3] softirqs last disabled at (0): 0x0 
| [ 3648.670175][    C3] Tainted: [L]=SOFTLOCKUP
[ 3648.670177][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3648.670179][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3648.670187][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3648.670190][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3648.670193][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3648.670196][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3648.670198][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3648.670199][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3648.670202][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3648.670203][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3648.670206][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3648.670210][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3648.670212][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3648.670214][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3648.670215][    C3] PKRU: 55555554
[ 3648.670216][    C3] Call Trace:
[ 3648.670220][    C3]  <IRQ>
[ 3648.670222][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3648.670228][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3648.670233][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3648.670237][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3648.670241][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3648.670246][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3648.670249][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3648.670253][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3648.670256][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3648.670260][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3648.670263][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3648.670265][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3648.670269][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3648.670274][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3648.670279][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3648.670282][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3648.670286][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3648.670291][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3648.670295][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3648.670301][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3648.670305][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3648.670311][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3648.670317][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3648.670320][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3648.670323][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3648.670327][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3648.670330][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3648.670333][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3648.670340][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3648.670343][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3648.670346][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3648.670350][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3648.670356][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3648.670359][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3648.670362][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3648.670366][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3648.670369][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3648.670374][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3648.670379][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3648.670381][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3648.670387][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3648.670391][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3648.670394][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3648.670399][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3648.670404][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3648.670410][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3648.670413][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3648.670417][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3648.670421][    C3]  </IRQ>
[ 3648.670422][    C3]  <TASK>
[ 3648.670424][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3648.670429][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3648.670433][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3648.670436][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3648.670439][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3648.670441][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3648.670443][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3648.670445][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3648.670446][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3648.670451][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3648.670457][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3648.670463][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3648.670467][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3648.670471][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3648.670474][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3648.670478][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3648.670481][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3648.670486][ C3] xas_alloc (lib/xarray.c:378) 
[ 3648.670491][ C3] xas_create (lib/xarray.c:685) 
[ 3648.670496][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3648.670501][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3648.670505][ C3] __xa_store (lib/xarray.c:1703) 
[ 3648.670509][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3648.670513][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3648.670516][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3648.670519][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3648.670524][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3648.670528][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3648.670532][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3648.670537][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3648.670540][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3648.670543][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3648.670547][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3648.670550][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3648.670555][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3648.670559][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3648.670564][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3648.670568][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3648.670572][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3648.670580][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3648.670584][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3648.670590][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3648.670594][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3648.670598][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3648.670601][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3648.670604][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3648.670607][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3648.670614][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3648.670618][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3648.670623][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3648.670627][    C3] RIP: 0033:0x7f439756d93b
[ 3648.670631][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3648.670634][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3648.670637][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3648.670639][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3648.670641][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3648.670643][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3648.670646][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3652.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3652.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3652.656127][ C0] softirqs last disabled at (0): 0x0 
| [ 3652.656136][    C0] Tainted: [L]=SOFTLOCKUP
[ 3652.656137][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3652.656139][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3652.656143][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3652.656146][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3652.656149][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3652.656151][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3652.656153][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3652.656155][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3652.656157][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3652.656159][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3652.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3652.656165][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3652.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3652.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3652.656171][    C0] PKRU: 55555554
[ 3652.656172][    C0] Call Trace:
[ 3652.656173][    C0]  <TASK>
[ 3652.656176][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3652.656179][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3652.656183][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3652.656186][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3652.656191][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3652.656194][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3652.656197][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3652.656200][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3652.656205][ C0] xa_store (lib/xarray.c:1734) 
[ 3652.656208][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3652.656212][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3652.656217][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3652.656220][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3652.656222][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3652.656227][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3652.656230][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3652.656236][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3652.656239][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3652.656244][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3652.656248][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3652.656253][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3652.656259][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3652.656263][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3652.656267][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3652.656271][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3652.656275][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3652.656278][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3652.656281][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3652.656285][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3652.656290][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3652.656294][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3652.656298][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3652.656301][    C0] RIP: 0033:0x7f439756d93b
[ 3652.656303][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3652.656306][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3652.656309][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3652.656312][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3652.656314][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3652.656315][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3652.656317][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3656.669151][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3656.669160][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3656.669163][ C2] softirqs last disabled at (0): 0x0 
| [ 3656.669177][    C2] Tainted: [L]=SOFTLOCKUP
[ 3656.669178][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3656.669181][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3656.669191][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3656.669195][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3656.669198][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3656.669200][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3656.669202][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3656.669205][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3656.669207][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3656.669208][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3656.669211][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3656.669215][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3656.669217][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3656.669219][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3656.669220][    C2] PKRU: 55555554
[ 3656.669222][    C2] Call Trace:
[ 3656.669226][    C2]  <TASK>
[ 3656.669230][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3656.669234][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3656.669240][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3656.669244][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3656.669252][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3656.669256][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3656.669259][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3656.669261][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3656.669269][ C2] xa_store (lib/xarray.c:1734) 
[ 3656.669274][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3656.669280][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3656.669286][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3656.669289][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3656.669292][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3656.669299][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3656.669302][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3656.669310][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3656.669314][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3656.669319][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3656.669326][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3656.669330][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3656.669339][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3656.669343][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3656.669349][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3656.669354][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3656.669357][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3656.669363][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3656.669366][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3656.669369][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3656.669377][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3656.669381][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3656.669386][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3656.669392][    C2] RIP: 0033:0x7f439756d93b
[ 3656.669397][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3656.669400][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3656.669403][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3656.669405][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3656.669407][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3656.669409][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3656.669411][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3676.669125][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3676.669131][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3676.669134][ C1] softirqs last disabled at (0): 0x0 
| [ 3676.669146][    C1] Tainted: [L]=SOFTLOCKUP
[ 3676.669147][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3676.669149][ C1] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3676.669155][ C1] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 3676.669158][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3676.669160][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3676.669162][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3676.669165][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3676.669167][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3676.669169][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3676.669171][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3676.669173][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3676.669177][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3676.669179][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3676.669181][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3676.669182][    C1] PKRU: 55555554
[ 3676.669184][    C1] Call Trace:
[ 3676.669186][    C1]  <TASK>
[ 3676.669189][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3676.669193][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3676.669197][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3676.669201][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3676.669206][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3676.669209][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3676.669212][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3676.669216][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3676.669221][ C1] xa_store (lib/xarray.c:1734) 
[ 3676.669225][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3676.669230][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3676.669235][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3676.669238][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3676.669240][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3676.669245][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3676.669249][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3676.669255][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3676.669259][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3676.669264][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3676.669268][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3676.669272][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3676.669279][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3676.669283][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3676.669287][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3676.669292][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3676.669295][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3676.669299][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3676.669302][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3676.669306][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3676.669311][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3676.669315][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3676.669319][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3676.669323][    C1] RIP: 0033:0x7f439756d93b
[ 3676.669327][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3676.669329][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3676.669332][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3676.669335][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3676.669336][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3676.669338][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3676.669340][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3676.670151][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3676.670159][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3676.670163][ C3] softirqs last disabled at (0): 0x0 
| [ 3676.670176][    C3] Tainted: [L]=SOFTLOCKUP
[ 3676.670177][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3676.670179][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3676.670187][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3676.670190][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3676.670193][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3676.670196][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3676.670198][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3676.670200][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3676.670202][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3676.670203][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3676.670206][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3676.670210][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3676.670212][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3676.670214][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3676.670215][    C3] PKRU: 55555554
[ 3676.670217][    C3] Call Trace:
[ 3676.670220][    C3]  <IRQ>
[ 3676.670222][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3676.670228][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3676.670233][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3676.670236][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3676.670241][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3676.670246][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3676.670249][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3676.670253][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3676.670256][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3676.670260][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3676.670262][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3676.670265][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3676.670268][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3676.670273][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3676.670278][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3676.670281][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3676.670285][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3676.670290][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3676.670294][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3676.670300][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3676.670304][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3676.670310][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3676.670316][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3676.670319][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3676.670322][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3676.670326][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3676.670329][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3676.670332][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3676.670338][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3676.670340][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3676.670343][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3676.670348][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3676.670353][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3676.670356][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3676.670359][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3676.670362][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3676.670366][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3676.670370][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3676.670375][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3676.670378][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3676.670383][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3676.670387][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3676.670391][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3676.670396][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3676.670400][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3676.670406][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3676.670410][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3676.670414][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3676.670418][    C3]  </IRQ>
[ 3676.670419][    C3]  <TASK>
[ 3676.670421][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3676.670426][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3676.670430][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3676.670433][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3676.670436][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3676.670438][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3676.670440][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3676.670442][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3676.670444][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3676.670448][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3676.670454][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3676.670459][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3676.670463][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3676.670467][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3676.670470][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3676.670474][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3676.670477][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3676.670482][ C3] xas_alloc (lib/xarray.c:378) 
[ 3676.670487][ C3] xas_create (lib/xarray.c:685) 
[ 3676.670493][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3676.670498][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3676.670501][ C3] __xa_store (lib/xarray.c:1703) 
[ 3676.670506][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3676.670510][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3676.670513][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3676.670517][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3676.670521][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3676.670525][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3676.670528][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3676.670533][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3676.670536][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3676.670539][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3676.670543][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3676.670547][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3676.670552][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3676.670556][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3676.670560][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3676.670564][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3676.670569][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3676.670577][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3676.670581][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3676.670587][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3676.670591][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3676.670594][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3676.670598][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3676.670600][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3676.670604][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3676.670610][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3676.670614][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3676.670619][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3676.670623][    C3] RIP: 0033:0x7f439756d93b
[ 3676.670627][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3676.670630][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3676.670633][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3676.670635][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3676.670637][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3676.670639][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3676.670640][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3680.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3680.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3680.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 3680.656136][    C0] Tainted: [L]=SOFTLOCKUP
[ 3680.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3680.656139][ C0] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3680.656144][ C0] Code: ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 <49> 01 c1 48 89 e8 49 8d 59 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	7f ff                	jg     0x3
   4:	ff 48 39             	decl   0x39(%rax)
   7:	c7                   	(bad)
   8:	76 dd                	jbe    0xffffffffffffffe7
   a:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df 
  1c:	4d 89 d1             	mov    %r10,%r9
  1f:	48 c1 ed 03          	shr    $0x3,%rbp
  23:	49 c1 e9 03          	shr    $0x3,%r9
  27:	48 01 c5             	add    %rax,%rbp
  2a:*	49 01 c1             	add    %rax,%r9		<-- trapping instruction
  2d:	48 89 e8             	mov    %rbp,%rax
  30:	49 8d 59 01          	lea    0x1(%r9),%rbx
  34:	48 89 da             	mov    %rbx,%rdx
  37:	48 29 ea             	sub    %rbp,%rdx
  3a:	48 83 fa 10          	cmp    $0x10,%rdx
  3e:	0f                   	.byte 0xf
  3f:	8e                   	.byte 0x8e

Code starting with the faulting instruction
===========================================
   0:	49 01 c1             	add    %rax,%r9
   3:	48 89 e8             	mov    %rbp,%rax
   6:	49 8d 59 01          	lea    0x1(%r9),%rbx
   a:	48 89 da             	mov    %rbx,%rdx
   d:	48 29 ea             	sub    %rbp,%rdx
  10:	48 83 fa 10          	cmp    $0x10,%rdx
  14:	0f                   	.byte 0xf
  15:	8e                   	.byte 0x8e
[ 3680.656147][    C0] RSP: 0018:ffffc900034c79f8 EFLAGS: 00000282
[ 3680.656150][    C0] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3680.656152][    C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3680.656154][    C0] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: 1ffffffff77dcb80
[ 3680.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3680.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3680.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3680.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3680.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3680.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3680.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3680.656172][    C0] PKRU: 55555554
[ 3680.656173][    C0] Call Trace:
[ 3680.656174][    C0]  <TASK>
[ 3680.656176][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3680.656181][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3680.656185][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3680.656188][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3680.656191][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3680.656196][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3680.656199][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3680.656202][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3680.656205][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3680.656210][ C0] xa_store (lib/xarray.c:1734) 
[ 3680.656214][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3680.656217][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3680.656222][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3680.656225][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3680.656228][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3680.656233][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3680.656236][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3680.656242][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3680.656245][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3680.656250][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3680.656254][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3680.656258][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3680.656265][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3680.656268][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3680.656273][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3680.656277][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3680.656280][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3680.656284][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3680.656287][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3680.656290][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3680.656296][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3680.656300][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3680.656304][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3680.656307][    C0] RIP: 0033:0x7f439756d93b
[ 3680.656311][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3680.656313][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3680.656316][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3680.656318][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3680.656320][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3680.656322][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3680.656324][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3684.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3684.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3684.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3684.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 3684.669137][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3684.669139][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3684.669144][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 3684.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3684.669149][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3684.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3684.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3684.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3684.669157][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3684.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3684.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3684.669165][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3684.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3684.669168][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3684.669170][    C2] PKRU: 55555554
[ 3684.669172][    C2] Call Trace:
[ 3684.669173][    C2]  <TASK>
[ 3684.669176][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3684.669179][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3684.669183][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3684.669186][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3684.669192][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3684.669195][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3684.669197][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3684.669200][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3684.669206][ C2] xa_store (lib/xarray.c:1734) 
[ 3684.669210][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3684.669214][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3684.669218][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3684.669221][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3684.669224][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3684.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3684.669232][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3684.669238][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3684.669241][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3684.669246][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3684.669250][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3684.669254][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3684.669260][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3684.669264][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3684.669268][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3684.669273][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3684.669276][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3684.669280][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3684.669283][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3684.669286][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3684.669291][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3684.669295][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3684.669299][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3684.669303][    C2] RIP: 0033:0x7f439756d93b
[ 3684.669307][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3684.669309][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3684.669312][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3684.669315][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3684.669316][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3684.669318][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3684.669320][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3700.548566][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 3700.549013][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 3700.549264][    C1] NMI backtrace for cpu 1
| [ 3700.549275][    C1] Tainted: [L]=SOFTLOCKUP
[ 3700.549276][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3700.549279][ C1] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3700.549284][ C1] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 3700.549287][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3700.549290][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3700.549292][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3700.549294][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3700.549296][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3700.549298][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3700.549301][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3700.549303][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3700.549307][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3700.549309][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3700.549310][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3700.549312][    C1] PKRU: 55555554
[ 3700.549314][    C1] Call Trace:
[ 3700.549315][    C1]  <TASK>
[ 3700.549317][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3700.549321][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3700.549325][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3700.549328][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3700.549333][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3700.549336][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3700.549339][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3700.549341][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3700.549346][ C1] xa_store (lib/xarray.c:1734) 
[ 3700.549350][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3700.549354][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3700.549358][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3700.549361][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3700.549364][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3700.549369][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3700.549372][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3700.549377][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3700.549381][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3700.549385][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3700.549389][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3700.549393][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3700.549399][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3700.549403][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3700.549407][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3700.549412][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3700.549415][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3700.549419][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3700.549422][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3700.549426][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3700.549431][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3700.549435][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3700.549439][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3700.549442][    C1] RIP: 0033:0x7f439756d93b
[ 3700.549445][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3700.549448][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3700.549450][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3700.549453][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3700.549454][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3700.549456][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3700.549458][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3700.549456][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 3700.549458][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3700.549464][    C1]  </TASK>
| [ 3700.550271][    C3] Tainted: [L]=SOFTLOCKUP
[ 3700.550272][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3700.550274][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 3700.550280][ C3] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 3700.550283][    C3] RSP: 0018:ffffc90000270a30 EFLAGS: 00000282
[ 3700.550287][    C3] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3700.550289][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3700.550291][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3700.550293][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3700.550295][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3700.550297][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3700.550300][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3700.550304][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3700.550307][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3700.550308][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3700.550310][    C3] PKRU: 55555554
[ 3700.550312][    C3] Call Trace:
[ 3700.550313][    C3]  <IRQ>
[ 3700.550315][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3700.550319][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3700.550323][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3700.550327][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3700.550330][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3700.550334][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3700.550338][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3700.550342][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3700.550346][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3700.550349][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3700.550352][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3700.550354][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3700.550357][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3700.550360][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3700.550365][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3700.550368][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3700.550371][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3700.550374][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3700.550380][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3700.550383][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3700.550389][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3700.550392][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3700.550398][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3700.550403][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3700.550406][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3700.550409][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3700.550413][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3700.550416][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3700.550419][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3700.550424][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3700.550427][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3700.550431][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3700.550435][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3700.550439][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3700.550442][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3700.550445][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3700.550449][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3700.550452][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3700.550457][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3700.550461][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3700.550464][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3700.550468][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3700.550472][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3700.550476][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3700.550481][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3700.550484][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3700.550490][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3700.550493][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3700.550496][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3700.550500][    C3]  </IRQ>
[ 3700.550501][    C3]  <TASK>
[ 3700.550503][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3700.550507][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3700.550510][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3700.550513][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3700.550515][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3700.550517][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3700.550519][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3700.550521][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3700.550524][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3700.550528][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3700.550534][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3700.550539][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3700.550542][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3700.550547][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3700.550550][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3700.550553][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3700.550556][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3700.550561][ C3] xas_alloc (lib/xarray.c:378) 
[ 3700.550565][ C3] xas_create (lib/xarray.c:685) 
[ 3700.550571][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3700.550575][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3700.550579][ C3] __xa_store (lib/xarray.c:1703) 
[ 3700.550583][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3700.550588][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3700.550590][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3700.550593][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3700.550598][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3700.550602][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3700.550605][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3700.550609][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3700.550612][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3700.550615][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3700.550619][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3700.550622][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3700.550627][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3700.550631][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3700.550635][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3700.550639][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3700.550643][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3700.550649][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3700.550653][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3700.550658][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3700.550663][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3700.550666][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3700.550669][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3700.550672][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3700.550675][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3700.550681][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3700.550685][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3700.550689][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3700.550692][    C3] RIP: 0033:0x7f439756d93b
[ 3700.550697][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3700.550699][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3700.550702][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3700.550704][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3700.550706][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3700.550707][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3700.550709][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3708.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3708.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3708.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 3708.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 3708.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3708.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3708.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3708.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3708.656151][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3708.656153][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3708.656156][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3708.656158][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3708.656160][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3708.656162][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3708.656164][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3708.656168][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3708.656170][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3708.656171][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3708.656173][    C0] PKRU: 55555554
[ 3708.656174][    C0] Call Trace:
[ 3708.656175][    C0]  <TASK>
[ 3708.656178][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3708.656182][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3708.656185][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3708.656188][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3708.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3708.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3708.656199][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3708.656201][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3708.656207][ C0] xa_store (lib/xarray.c:1734) 
[ 3708.656210][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3708.656214][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3708.656218][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3708.656222][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3708.656225][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3708.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3708.656232][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3708.656237][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3708.656241][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3708.656246][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3708.656250][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3708.656254][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3708.656260][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3708.656264][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3708.656268][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3708.656272][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3708.656276][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3708.656279][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3708.656282][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3708.656286][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3708.656292][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3708.656295][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3708.656300][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3708.656303][    C0] RIP: 0033:0x7f439756d93b
[ 3708.656306][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3708.656309][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3708.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3708.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3708.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3708.656318][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3708.656320][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3712.669130][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3712.669135][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3712.669138][ C2] softirqs last disabled at (0): 0x0 
| [ 3712.669147][    C2] Tainted: [L]=SOFTLOCKUP
[ 3712.669148][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3712.669150][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3712.669154][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3712.669158][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3712.669160][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3712.669162][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3712.669164][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3712.669166][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3712.669168][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3712.669171][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3712.669173][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3712.669176][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3712.669178][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3712.669180][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3712.669182][    C2] PKRU: 55555554
[ 3712.669183][    C2] Call Trace:
[ 3712.669185][    C2]  <TASK>
[ 3712.669187][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3712.669190][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3712.669194][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3712.669197][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3712.669202][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3712.669205][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3712.669208][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3712.669210][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3712.669215][ C2] xa_store (lib/xarray.c:1734) 
[ 3712.669220][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3712.669223][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3712.669228][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3712.669231][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3712.669234][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3712.669238][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3712.669242][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3712.669247][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3712.669251][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3712.669256][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3712.669260][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3712.669264][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3712.669270][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3712.669273][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3712.669277][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3712.669282][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3712.669285][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3712.669290][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3712.669292][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3712.669296][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3712.669301][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3712.669305][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3712.669309][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3712.669312][    C2] RIP: 0033:0x7f439756d93b
[ 3712.669315][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3712.669318][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3712.669320][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3712.669322][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3712.669324][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3712.669326][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3712.669328][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3724.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3724.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3724.669129][ C1] softirqs last disabled at (0): 0x0 
| [ 3724.669138][    C1] Tainted: [L]=SOFTLOCKUP
[ 3724.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3724.669141][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3724.669146][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3724.669149][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3724.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3724.669154][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3724.669156][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3724.669158][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3724.669160][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3724.669162][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3724.669164][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3724.669168][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3724.669170][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3724.669172][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3724.669173][    C1] PKRU: 55555554
[ 3724.669174][    C1] Call Trace:
[ 3724.669176][    C1]  <TASK>
[ 3724.669178][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3724.669182][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3724.669186][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3724.669189][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3724.669193][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3724.669196][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3724.669199][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3724.669202][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3724.669207][ C1] xa_store (lib/xarray.c:1734) 
[ 3724.669211][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3724.669214][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3724.669219][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3724.669222][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3724.669225][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3724.669229][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3724.669233][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3724.669238][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3724.669242][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3724.669247][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3724.669250][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3724.669255][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3724.669261][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3724.669264][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3724.669269][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3724.669273][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3724.669276][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3724.669280][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3724.669283][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3724.669286][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3724.669291][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3724.669295][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3724.669299][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3724.669303][    C1] RIP: 0033:0x7f439756d93b
[ 3724.669305][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3724.669308][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3724.669311][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3724.669313][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3724.669315][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3724.669317][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3724.669319][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3724.670134][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3724.670143][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3724.670147][ C3] softirqs last disabled at (0): 0x0 
| [ 3724.670159][    C3] Tainted: [L]=SOFTLOCKUP
[ 3724.670160][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3724.670163][ C3] RIP: 0010:kasan_check_range (mm/kasan/generic.c:89 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3724.670169][ C3] Code: 11 80 38 00 74 ef 4d 8d 1c 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea eb 09 <48> 83 c0 01 48 39 d0 74 a5 80 38 00 74 f2 e9 74 ff ff ff b8 01 00
All code
========
   0:	11 80 38 00 74 ef    	adc    %eax,-0x108bffc8(%rax)
   6:	4d 8d 1c 2c          	lea    (%r12,%rbp,1),%r11
   a:	48 89 c2             	mov    %rax,%rdx
   d:	48 85 c0             	test   %rax,%rax
  10:	75 b0                	jne    0xffffffffffffffc2
  12:	48 89 da             	mov    %rbx,%rdx
  15:	4c 89 d8             	mov    %r11,%rax
  18:	4c 29 da             	sub    %r11,%rdx
  1b:	e9 49 ff ff ff       	jmp    0xffffffffffffff69
  20:	48 85 d2             	test   %rdx,%rdx
  23:	74 b3                	je     0xffffffffffffffd8
  25:	48 01 ea             	add    %rbp,%rdx
  28:	eb 09                	jmp    0x33
  2a:*	48 83 c0 01          	add    $0x1,%rax		<-- trapping instruction
  2e:	48 39 d0             	cmp    %rdx,%rax
  31:	74 a5                	je     0xffffffffffffffd8
  33:	80 38 00             	cmpb   $0x0,(%rax)
  36:	74 f2                	je     0x2a
  38:	e9 74 ff ff ff       	jmp    0xffffffffffffffb1
  3d:	b8                   	.byte 0xb8
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	48 83 c0 01          	add    $0x1,%rax
   4:	48 39 d0             	cmp    %rdx,%rax
   7:	74 a5                	je     0xffffffffffffffae
   9:	80 38 00             	cmpb   $0x0,(%rax)
   c:	74 f2                	je     0x0
   e:	e9 74 ff ff ff       	jmp    0xffffffffffffff87
  13:	b8                   	.byte 0xb8
  14:	01 00                	add    %eax,(%rax)
[ 3724.670172][    C3] RSP: 0018:ffffc90000270a28 EFLAGS: 00000246
[ 3724.670175][    C3] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 3724.670178][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3724.670179][    C3] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3724.670181][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3724.670184][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3724.670185][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3724.670188][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3724.670192][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3724.670193][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3724.670195][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3724.670197][    C3] PKRU: 55555554
[ 3724.670198][    C3] Call Trace:
[ 3724.670202][    C3]  <IRQ>
[ 3724.670205][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3724.670212][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3724.670216][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3724.670221][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3724.670224][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3724.670228][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3724.670233][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3724.670236][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3724.670240][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3724.670244][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3724.670247][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3724.670250][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3724.670253][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3724.670255][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3724.670261][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3724.670266][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3724.670269][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3724.670273][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3724.670278][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3724.670282][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3724.670288][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3724.670293][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3724.670299][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3724.670305][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3724.670307][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3724.670310][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3724.670314][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3724.670317][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3724.670320][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3724.670326][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3724.670329][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3724.670332][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3724.670336][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3724.670340][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3724.670344][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3724.670346][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3724.670350][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3724.670353][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3724.670357][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3724.670362][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3724.670365][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3724.670370][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3724.670374][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3724.670377][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3724.670382][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3724.670387][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3724.670393][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3724.670396][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3724.670400][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3724.670404][    C3]  </IRQ>
[ 3724.670405][    C3]  <TASK>
[ 3724.670407][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3724.670412][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3724.670415][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3724.670418][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3724.670421][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3724.670424][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3724.670425][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3724.670427][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3724.670429][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3724.670433][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3724.670439][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3724.670445][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3724.670448][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3724.670453][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3724.670456][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3724.670460][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3724.670463][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3724.670468][ C3] xas_alloc (lib/xarray.c:378) 
[ 3724.670472][ C3] xas_create (lib/xarray.c:685) 
[ 3724.670478][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3724.670482][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3724.670486][ C3] __xa_store (lib/xarray.c:1703) 
[ 3724.670490][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3724.670495][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3724.670498][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3724.670501][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3724.670506][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3724.670509][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3724.670513][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3724.670518][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3724.670521][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3724.670524][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3724.670528][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3724.670532][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3724.670537][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3724.670540][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3724.670545][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3724.670549][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3724.670553][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3724.670561][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3724.670565][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3724.670570][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3724.670575][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3724.670578][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3724.670582][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3724.670584][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3724.670588][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3724.670595][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3724.670598][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3724.670604][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3724.670607][    C3] RIP: 0033:0x7f439756d93b
[ 3724.670611][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3724.670614][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3724.670617][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3724.670620][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3724.670622][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3724.670624][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3724.670626][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3736.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3736.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3736.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 3736.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 3736.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3736.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3736.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3736.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3736.656151][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3736.656153][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3736.656155][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3736.656157][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3736.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3736.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3736.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3736.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3736.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3736.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3736.656172][    C0] PKRU: 55555554
[ 3736.656173][    C0] Call Trace:
[ 3736.656174][    C0]  <TASK>
[ 3736.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3736.656180][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3736.656184][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3736.656187][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3736.656192][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3736.656195][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3736.656198][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3736.656201][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3736.656206][ C0] xa_store (lib/xarray.c:1734) 
[ 3736.656209][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3736.656213][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3736.656218][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3736.656221][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3736.656224][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3736.656228][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3736.656232][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3736.656237][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3736.656241][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3736.656245][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3736.656250][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3736.656254][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3736.656260][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3736.656264][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3736.656268][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3736.656273][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3736.656276][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3736.656280][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3736.656282][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3736.656286][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3736.656292][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3736.656296][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3736.656300][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3736.656303][    C0] RIP: 0033:0x7f439756d93b
[ 3736.656305][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3736.656308][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3736.656311][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3736.656313][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3736.656315][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3736.656317][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3736.656319][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3740.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3740.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3740.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3740.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 3740.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3740.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3740.669144][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3740.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3740.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3740.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3740.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3740.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3740.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3740.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3740.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3740.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3740.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3740.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3740.669171][    C2] PKRU: 55555554
[ 3740.669172][    C2] Call Trace:
[ 3740.669174][    C2]  <TASK>
[ 3740.669177][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3740.669181][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3740.669185][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3740.669188][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3740.669193][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3740.669196][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3740.669199][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3740.669202][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3740.669207][ C2] xa_store (lib/xarray.c:1734) 
[ 3740.669211][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3740.669214][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3740.669219][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3740.669222][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3740.669225][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3740.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3740.669233][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3740.669238][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3740.669242][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3740.669246][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3740.669251][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3740.669255][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3740.669261][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3740.669265][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3740.669269][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3740.669274][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3740.669277][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3740.669281][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3740.669283][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3740.669287][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3740.669292][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3740.669296][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3740.669300][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3740.669303][    C2] RIP: 0033:0x7f439756d93b
[ 3740.669306][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3740.669308][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3740.669311][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3740.669313][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3740.669315][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3740.669317][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3740.669319][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3752.669121][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3752.669126][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3752.669130][ C1] softirqs last disabled at (0): 0x0 
| [ 3752.669139][    C1] Tainted: [L]=SOFTLOCKUP
[ 3752.669140][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3752.669142][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3752.669146][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3752.669149][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3752.669152][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3752.669154][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3752.669156][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3752.669158][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3752.669160][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3752.669162][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3752.669165][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3752.669168][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3752.669170][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3752.669171][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3752.669173][    C1] PKRU: 55555554
[ 3752.669174][    C1] Call Trace:
[ 3752.669176][    C1]  <TASK>
[ 3752.669179][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3752.669182][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3752.669186][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3752.669189][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3752.669194][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3752.669197][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3752.669200][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3752.669203][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3752.669208][ C1] xa_store (lib/xarray.c:1734) 
[ 3752.669212][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3752.669216][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3752.669220][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3752.669223][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3752.669226][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3752.669231][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3752.669234][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3752.669240][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3752.669243][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3752.669248][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3752.669252][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3752.669256][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3752.669263][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3752.669267][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3752.669271][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3752.669276][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3752.669279][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3752.669283][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3752.669286][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3752.669289][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3752.669294][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3752.669298][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3752.669302][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3752.669305][    C1] RIP: 0033:0x7f439756d93b
[ 3752.669308][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3752.669310][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3752.669313][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3752.669315][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3752.669317][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3752.669319][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3752.669321][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3752.670152][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3752.670160][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3752.670164][ C3] softirqs last disabled at (0): 0x0 
| [ 3752.670176][    C3] Tainted: [L]=SOFTLOCKUP
[ 3752.670177][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3752.670179][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3752.670187][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3752.670190][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3752.670193][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3752.670196][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3752.670198][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3752.670200][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3752.670202][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3752.670204][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3752.670206][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3752.670211][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3752.670213][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3752.670214][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3752.670216][    C3] PKRU: 55555554
[ 3752.670218][    C3] Call Trace:
[ 3752.670222][    C3]  <IRQ>
[ 3752.670224][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3752.670229][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3752.670235][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3752.670238][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3752.670243][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3752.670248][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3752.670252][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3752.670256][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3752.670259][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3752.670262][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3752.670265][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3752.670268][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3752.670270][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3752.670276][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3752.670280][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3752.670283][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3752.670287][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3752.670292][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3752.670296][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3752.670302][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3752.670307][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3752.670313][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3752.670318][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3752.670321][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3752.670324][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3752.670328][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3752.670331][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3752.670334][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3752.670339][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3752.670342][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3752.670345][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3752.670350][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3752.670355][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3752.670358][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3752.670361][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3752.670364][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3752.670368][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3752.670372][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3752.670377][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3752.670380][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3752.670385][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3752.670389][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3752.670393][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3752.670398][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3752.670403][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3752.670409][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3752.670413][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3752.670416][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3752.670420][    C3]  </IRQ>
[ 3752.670422][    C3]  <TASK>
[ 3752.670423][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3752.670429][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3752.670432][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3752.670435][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3752.670438][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3752.670441][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3752.670442][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3752.670444][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3752.670446][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3752.670450][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3752.670456][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3752.670462][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3752.670466][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3752.670470][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3752.670473][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3752.670478][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3752.670480][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3752.670485][ C3] xas_alloc (lib/xarray.c:378) 
[ 3752.670490][ C3] xas_create (lib/xarray.c:685) 
[ 3752.670496][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3752.670500][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3752.670504][ C3] __xa_store (lib/xarray.c:1703) 
[ 3752.670508][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3752.670513][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3752.670515][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3752.670519][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3752.670523][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3752.670527][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3752.670530][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3752.670535][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3752.670538][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3752.670541][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3752.670545][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3752.670548][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3752.670553][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3752.670557][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3752.670562][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3752.670566][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3752.670570][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3752.670578][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3752.670582][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3752.670587][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3752.670592][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3752.670595][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3752.670599][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3752.670602][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3752.670606][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3752.670612][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3752.670616][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3752.670621][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3752.670625][    C3] RIP: 0033:0x7f439756d93b
[ 3752.670629][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3752.670632][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3752.670635][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3752.670637][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3752.670640][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3752.670642][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3752.670644][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3764.656136][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3764.656146][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3764.656150][ C0] softirqs last disabled at (0): 0x0 
| [ 3764.656162][    C0] Tainted: [L]=SOFTLOCKUP
[ 3764.656164][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3764.656166][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:87 mm/kasan/generic.c:104 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3764.656173][ C0] Code: 2c 48 89 c2 48 85 c0 75 b0 48 89 da 4c 89 d8 4c 29 da e9 49 ff ff ff 48 85 d2 74 b3 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 a5 <80> 38 00 74 f2 e9 74 ff ff ff b8 01 00 00 00 e9 cb 80 38 02 48 29
All code
========
   0:	2c 48                	sub    $0x48,%al
   2:	89 c2                	mov    %eax,%edx
   4:	48 85 c0             	test   %rax,%rax
   7:	75 b0                	jne    0xffffffffffffffb9
   9:	48 89 da             	mov    %rbx,%rdx
   c:	4c 89 d8             	mov    %r11,%rax
   f:	4c 29 da             	sub    %r11,%rdx
  12:	e9 49 ff ff ff       	jmp    0xffffffffffffff60
  17:	48 85 d2             	test   %rdx,%rdx
  1a:	74 b3                	je     0xffffffffffffffcf
  1c:	48 01 ea             	add    %rbp,%rdx
  1f:	eb 09                	jmp    0x2a
  21:	48 83 c0 01          	add    $0x1,%rax
  25:	48 39 d0             	cmp    %rdx,%rax
  28:	74 a5                	je     0xffffffffffffffcf
  2a:*	80 38 00             	cmpb   $0x0,(%rax)		<-- trapping instruction
  2d:	74 f2                	je     0x21
  2f:	e9 74 ff ff ff       	jmp    0xffffffffffffffa8
  34:	b8 01 00 00 00       	mov    $0x1,%eax
  39:	e9 cb 80 38 02       	jmp    0x2388109
  3e:	48                   	rex.W
  3f:	29                   	.byte 0x29

Code starting with the faulting instruction
===========================================
   0:	80 38 00             	cmpb   $0x0,(%rax)
   3:	74 f2                	je     0xfffffffffffffff7
   5:	e9 74 ff ff ff       	jmp    0xffffffffffffff7e
   a:	b8 01 00 00 00       	mov    $0x1,%eax
   f:	e9 cb 80 38 02       	jmp    0x23880df
  14:	48                   	rex.W
  15:	29                   	.byte 0x29
[ 3764.656177][    C0] RSP: 0018:ffffc900034c79f8 EFLAGS: 00000286
[ 3764.656180][    C0] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 3764.656183][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3764.656185][    C0] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3764.656187][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3764.656189][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3764.656191][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3764.656194][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3764.656198][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3764.656200][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3764.656201][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3764.656203][    C0] PKRU: 55555554
[ 3764.656204][    C0] Call Trace:
[ 3764.656208][    C0]  <TASK>
[ 3764.656213][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3764.656222][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3764.656225][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3764.656230][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3764.656235][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3764.656242][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3764.656246][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3764.656248][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3764.656251][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3764.656258][ C0] xa_store (lib/xarray.c:1734) 
[ 3764.656263][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3764.656269][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3764.656274][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3764.656277][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3764.656280][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3764.656287][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3764.656290][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3764.656298][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3764.656302][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3764.656307][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3764.656313][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3764.656317][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3764.656327][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3764.656331][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3764.656337][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3764.656342][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3764.656345][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3764.656350][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3764.656354][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3764.656357][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3764.656364][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3764.656369][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3764.656374][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3764.656380][    C0] RIP: 0033:0x7f439756d93b
[ 3764.656385][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3764.656388][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3764.656391][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3764.656393][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3764.656395][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3764.656397][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3764.656399][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3768.669121][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3768.669126][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3768.669130][ C2] softirqs last disabled at (0): 0x0 
| [ 3768.669139][    C2] Tainted: [L]=SOFTLOCKUP
[ 3768.669141][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3768.669143][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3768.669148][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3768.669151][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3768.669153][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3768.669155][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3768.669157][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3768.669159][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3768.669161][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3768.669164][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3768.669166][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3768.669169][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3768.669172][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3768.669173][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3768.669175][    C2] PKRU: 55555554
[ 3768.669176][    C2] Call Trace:
[ 3768.669178][    C2]  <TASK>
[ 3768.669181][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3768.669185][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3768.669188][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3768.669191][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3768.669196][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3768.669200][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3768.669202][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3768.669205][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3768.669210][ C2] xa_store (lib/xarray.c:1734) 
[ 3768.669214][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3768.669218][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3768.669223][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3768.669226][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3768.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3768.669233][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3768.669236][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3768.669242][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3768.669246][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3768.669251][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3768.669255][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3768.669259][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3768.669266][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3768.669269][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3768.669274][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3768.669278][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3768.669282][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3768.669285][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3768.669288][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3768.669292][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3768.669297][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3768.669300][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3768.669305][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3768.669308][    C2] RIP: 0033:0x7f439756d93b
[ 3768.669312][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3768.669314][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3768.669318][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3768.669320][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3768.669321][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3768.669323][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3768.669325][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3778.562684][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 3778.562960][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 3778.563356][    C1] NMI backtrace for cpu 1
| [ 3778.563367][    C1] Tainted: [L]=SOFTLOCKUP
[ 3778.563369][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3778.563371][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3778.563377][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3778.563380][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3778.563383][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3778.563385][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3778.563387][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3778.563390][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3778.563392][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3778.563394][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3778.563396][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3778.563400][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3778.563402][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3778.563403][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3778.563405][    C1] PKRU: 55555554
[ 3778.563406][    C1] Call Trace:
[ 3778.563408][    C1]  <TASK>
[ 3778.563410][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3778.563414][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3778.563417][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3778.563421][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3778.563426][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3778.563429][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3778.563432][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3778.563435][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3778.563440][ C1] xa_store (lib/xarray.c:1734) 
[ 3778.563444][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3778.563448][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3778.563453][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3778.563455][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3778.563458][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3778.563463][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3778.563466][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3778.563472][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3778.563476][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3778.563480][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3778.563484][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3778.563488][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3778.563495][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3778.563498][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3778.563503][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3778.563507][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3778.563510][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3778.563514][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3778.563517][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3778.563521][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3778.563526][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3778.563529][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3778.563533][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3778.563536][    C1] RIP: 0033:0x7f439756d93b
[ 3778.563540][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3778.563542][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3778.563545][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3778.563548][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3778.563549][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3778.563551][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3778.563553][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3778.563551][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 3778.563553][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3778.563559][    C1]  </TASK>
| [ 3778.564360][    C3] Tainted: [L]=SOFTLOCKUP
[ 3778.564362][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3778.564364][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3778.564369][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3778.564372][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3778.564376][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3778.564378][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3778.564380][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3778.564382][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3778.564384][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3778.564386][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3778.564389][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3778.564393][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3778.564395][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3778.564397][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3778.564399][    C3] PKRU: 55555554
[ 3778.564400][    C3] Call Trace:
[ 3778.564402][    C3]  <IRQ>
[ 3778.564403][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3778.564408][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3778.564412][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3778.564415][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3778.564419][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3778.564424][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3778.564427][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3778.564431][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3778.564434][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3778.564437][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3778.564440][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3778.564443][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3778.564446][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3778.564451][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3778.564455][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3778.564458][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3778.564461][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3778.564466][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3778.564470][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3778.564475][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3778.564479][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3778.564485][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3778.564489][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3778.564492][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3778.564495][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3778.564498][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3778.564502][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3778.564504][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3778.564511][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3778.564513][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3778.564517][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3778.564521][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3778.564525][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3778.564529][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3778.564531][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3778.564535][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3778.564539][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3778.564543][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3778.564547][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3778.564550][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3778.564555][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3778.564559][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3778.564563][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3778.564567][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3778.564572][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3778.564577][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3778.564580][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3778.564583][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3778.564587][    C3]  </IRQ>
[ 3778.564588][    C3]  <TASK>
[ 3778.564589][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3778.564593][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3778.564596][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3778.564599][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3778.564601][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3778.564603][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3778.564605][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3778.564606][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3778.564608][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3778.564612][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3778.564617][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3778.564623][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3778.564626][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3778.564630][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3778.564633][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3778.564637][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3778.564640][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3778.564644][ C3] xas_alloc (lib/xarray.c:378) 
[ 3778.564649][ C3] xas_create (lib/xarray.c:685) 
[ 3778.564654][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3778.564659][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3778.564662][ C3] __xa_store (lib/xarray.c:1703) 
[ 3778.564666][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3778.564671][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3778.564673][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3778.564676][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3778.564681][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3778.564685][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3778.564688][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3778.564693][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3778.564696][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3778.564698][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3778.564702][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3778.564705][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3778.564710][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3778.564714][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3778.564718][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3778.564722][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3778.564727][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3778.564733][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3778.564736][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3778.564742][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3778.564746][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3778.564750][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3778.564753][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3778.564756][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3778.564759][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3778.564765][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3778.564769][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3778.564774][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3778.564776][    C3] RIP: 0033:0x7f439756d93b
[ 3778.564781][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3778.564783][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3778.564786][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3778.564788][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3778.564790][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3778.564791][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3778.564793][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3792.656123][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3792.656128][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3792.656131][ C0] softirqs last disabled at (0): 0x0 
| [ 3792.656140][    C0] Tainted: [L]=SOFTLOCKUP
[ 3792.656141][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3792.656143][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:188) 
[ 3792.656147][ C0] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	66 0f 1f 00          	nopw   (%rax)
  14:	48 85 f6             	test   %rsi,%rsi
  17:	0f 84 5e 01 00 00    	je     0x17b
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	41 54                	push   %r12
  22:	44 0f b6 c2          	movzbl %dl,%r8d
  26:	48 01 f0             	add    %rsi,%rax
  29:	55                   	push   %rbp
  2a:*	53                   	push   %rbx		<-- trapping instruction
  2b:	72 14                	jb     0x41
  2d:	eb 26                	jmp    0x55
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  39:	ff ff fe 
  3c:	48 39 c7             	cmp    %rax,%rdi
  3f:	77                   	.byte 0x77

Code starting with the faulting instruction
===========================================
   0:	53                   	push   %rbx
   1:	72 14                	jb     0x17
   3:	eb 26                	jmp    0x2b
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   f:	ff ff fe 
  12:	48 39 c7             	cmp    %rax,%rdi
  15:	77                   	.byte 0x77
[ 3792.656150][    C0] RSP: 0018:ffffc900034c7a00 EFLAGS: 00000282
[ 3792.656153][    C0] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3792.656155][    C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3792.656157][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3792.656159][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3792.656161][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3792.656163][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3792.656165][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3792.656168][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3792.656170][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3792.656172][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3792.656174][    C0] PKRU: 55555554
[ 3792.656175][    C0] Call Trace:
[ 3792.656176][    C0]  <TASK>
[ 3792.656178][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3792.656183][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3792.656187][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3792.656190][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3792.656193][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3792.656198][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3792.656201][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3792.656203][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3792.656206][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3792.656211][ C0] xa_store (lib/xarray.c:1734) 
[ 3792.656216][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3792.656219][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3792.656224][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3792.656227][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3792.656230][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3792.656234][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3792.656238][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3792.656243][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3792.656247][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3792.656252][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3792.656256][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3792.656260][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3792.656266][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3792.656270][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3792.656274][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3792.656279][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3792.656282][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3792.656286][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3792.656289][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3792.656292][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3792.656297][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3792.656301][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3792.656306][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3792.656309][    C0] RIP: 0033:0x7f439756d93b
[ 3792.656312][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3792.656315][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3792.656318][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3792.656320][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3792.656322][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3792.656324][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3792.656326][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3796.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3796.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3796.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 3796.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 3796.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3796.669141][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3796.669145][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3796.669149][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3796.669151][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3796.669154][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3796.669156][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3796.669158][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3796.669160][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3796.669162][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3796.669164][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3796.669168][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3796.669170][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3796.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3796.669173][    C2] PKRU: 55555554
[ 3796.669175][    C2] Call Trace:
[ 3796.669176][    C2]  <TASK>
[ 3796.669179][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3796.669183][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3796.669187][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3796.669190][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3796.669195][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3796.669198][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3796.669201][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3796.669204][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3796.669209][ C2] xa_store (lib/xarray.c:1734) 
[ 3796.669214][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3796.669217][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3796.669222][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3796.669225][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3796.669228][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3796.669232][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3796.669236][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3796.669241][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3796.669245][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3796.669249][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3796.669253][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3796.669258][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3796.669264][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3796.669267][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3796.669271][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3796.669276][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3796.669279][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3796.669283][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3796.669286][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3796.669289][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3796.669294][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3796.669298][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3796.669302][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3796.669306][    C2] RIP: 0033:0x7f439756d93b
[ 3796.669309][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3796.669311][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3796.669314][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3796.669317][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3796.669318][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3796.669320][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3796.669322][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3804.669121][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3804.669126][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3804.669129][ C1] softirqs last disabled at (0): 0x0 
| [ 3804.669138][    C1] Tainted: [L]=SOFTLOCKUP
[ 3804.669140][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3804.669142][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3804.669146][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3804.669149][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3804.669152][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3804.669154][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3804.669156][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3804.669158][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3804.669160][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3804.669163][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3804.669165][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3804.669168][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3804.669171][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3804.669172][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3804.669174][    C1] PKRU: 55555554
[ 3804.669175][    C1] Call Trace:
[ 3804.669177][    C1]  <TASK>
[ 3804.669179][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3804.669183][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3804.669187][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3804.669190][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3804.669194][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3804.669197][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3804.669200][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3804.669203][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3804.669208][ C1] xa_store (lib/xarray.c:1734) 
[ 3804.669212][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3804.669216][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3804.669221][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3804.669224][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3804.669227][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3804.669231][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3804.669235][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3804.669240][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3804.669244][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3804.669248][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3804.669253][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3804.669257][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3804.669263][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3804.669267][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3804.669271][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3804.669276][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3804.669279][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3804.669283][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3804.669286][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3804.669289][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3804.669295][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3804.669299][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3804.669303][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3804.669305][    C1] RIP: 0033:0x7f439756d93b
[ 3804.669308][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3804.669311][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3804.669314][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3804.669316][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3804.669318][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3804.669320][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3804.669322][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3804.670152][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3804.670160][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3804.670164][ C3] softirqs last disabled at (0): 0x0 
| [ 3804.670176][    C3] Tainted: [L]=SOFTLOCKUP
[ 3804.670178][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3804.670180][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3804.670188][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3804.670191][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3804.670194][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3804.670196][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3804.670198][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3804.670201][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3804.670203][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3804.670205][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3804.670207][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3804.670211][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3804.670213][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3804.670215][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3804.670217][    C3] PKRU: 55555554
[ 3804.670218][    C3] Call Trace:
[ 3804.670222][    C3]  <IRQ>
[ 3804.670224][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3804.670229][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3804.670235][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3804.670238][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3804.670244][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3804.670248][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3804.670252][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3804.670256][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3804.670259][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3804.670263][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3804.670266][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3804.670268][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3804.670271][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3804.670277][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3804.670283][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3804.670286][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3804.670290][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3804.670296][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3804.670300][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3804.670305][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3804.670310][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3804.670316][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3804.670323][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3804.670326][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3804.670329][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3804.670332][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3804.670335][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3804.670338][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3804.670344][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3804.670347][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3804.670350][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3804.670355][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3804.670359][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3804.670363][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3804.670365][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3804.670369][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3804.670372][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3804.670377][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3804.670382][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3804.670385][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3804.670390][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3804.670394][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3804.670397][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3804.670402][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3804.670407][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3804.670413][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3804.670416][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3804.670420][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3804.670424][    C3]  </IRQ>
[ 3804.670425][    C3]  <TASK>
[ 3804.670427][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3804.670432][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3804.670435][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3804.670438][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3804.670441][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3804.670444][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3804.670446][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3804.670447][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3804.670449][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3804.670453][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3804.670459][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3804.670465][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3804.670469][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3804.670473][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3804.670476][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3804.670480][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3804.670483][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3804.670488][ C3] xas_alloc (lib/xarray.c:378) 
[ 3804.670493][ C3] xas_create (lib/xarray.c:685) 
[ 3804.670499][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3804.670503][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3804.670507][ C3] __xa_store (lib/xarray.c:1703) 
[ 3804.670511][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3804.670516][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3804.670519][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3804.670522][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3804.670527][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3804.670530][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3804.670534][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3804.670539][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3804.670542][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3804.670545][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3804.670549][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3804.670552][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3804.670557][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3804.670561][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3804.670566][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3804.670570][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3804.670575][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3804.670583][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3804.670587][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3804.670593][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3804.670597][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3804.670601][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3804.670605][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3804.670607][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3804.670611][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3804.670617][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3804.670621][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3804.670626][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3804.670630][    C3] RIP: 0033:0x7f439756d93b
[ 3804.670633][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3804.670636][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3804.670639][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3804.670641][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3804.670644][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3804.670646][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3804.670648][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3820.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3820.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3820.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 3820.656136][    C0] Tainted: [L]=SOFTLOCKUP
[ 3820.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3820.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3820.656144][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3820.656147][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3820.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3820.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3820.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3820.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3820.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3820.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3820.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3820.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3820.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3820.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3820.656171][    C0] PKRU: 55555554
[ 3820.656172][    C0] Call Trace:
[ 3820.656173][    C0]  <TASK>
[ 3820.656176][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3820.656179][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3820.656183][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3820.656186][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3820.656192][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3820.656195][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3820.656198][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3820.656200][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3820.656206][ C0] xa_store (lib/xarray.c:1734) 
[ 3820.656210][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3820.656213][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3820.656218][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3820.656221][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3820.656224][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3820.656228][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3820.656232][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3820.656237][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3820.656241][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3820.656245][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3820.656249][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3820.656254][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3820.656260][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3820.656264][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3820.656268][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3820.656272][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3820.656276][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3820.656279][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3820.656282][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3820.656286][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3820.656291][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3820.656295][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3820.656299][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3820.656302][    C0] RIP: 0033:0x7f439756d93b
[ 3820.656306][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3820.656309][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3820.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3820.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3820.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3820.656318][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3820.656320][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3824.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3824.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3824.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 3824.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 3824.669140][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3824.669141][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3824.669146][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3824.669149][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3824.669152][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3824.669154][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3824.669156][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3824.669158][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3824.669160][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3824.669162][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3824.669165][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3824.669168][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3824.669170][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3824.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3824.669173][    C2] PKRU: 55555554
[ 3824.669174][    C2] Call Trace:
[ 3824.669176][    C2]  <TASK>
[ 3824.669179][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3824.669182][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3824.669186][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3824.669189][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3824.669194][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3824.669197][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3824.669200][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3824.669203][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3824.669208][ C2] xa_store (lib/xarray.c:1734) 
[ 3824.669212][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3824.669216][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3824.669221][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3824.669224][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3824.669227][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3824.669231][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3824.669234][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3824.669240][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3824.669244][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3824.669248][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3824.669252][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3824.669257][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3824.669263][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3824.669267][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3824.669271][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3824.669275][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3824.669279][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3824.669282][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3824.669285][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3824.669289][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3824.669294][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3824.669298][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3824.669302][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3824.669305][    C2] RIP: 0033:0x7f439756d93b
[ 3824.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3824.669311][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3824.669314][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3824.669317][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3824.669318][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3824.669320][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3824.669322][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3832.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3832.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3832.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 3832.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 3832.669138][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3832.669140][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 3832.669144][ C1] Code: 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff 5b b8 01 00 00 00 5d 41 5c <c3> cc cc cc cc 41 bc 08 00 00 00 45 29 dc 49 8d 14 2c eb 0c 48 83
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	48 85 d2             	test   %rdx,%rdx
   5:	0f 84 4c ff ff ff    	je     0xffffffffffffff57
   b:	41 83 e2 07          	and    $0x7,%r10d
   f:	49 39 d1             	cmp    %rdx,%r9
  12:	0f 85 34 ff ff ff    	jne    0xffffffffffffff4c
  18:	45 3a 11             	cmp    (%r9),%r10b
  1b:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff4c
  21:	5b                   	pop    %rbx
  22:	b8 01 00 00 00       	mov    $0x1,%eax
  27:	5d                   	pop    %rbp
  28:	41 5c                	pop    %r12
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  35:	45 29 dc             	sub    %r11d,%r12d
  38:	49 8d 14 2c          	lea    (%r12,%rbp,1),%rdx
  3c:	eb 0c                	jmp    0x4a
  3e:	48                   	rex.W
  3f:	83                   	.byte 0x83

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	41 bc 08 00 00 00    	mov    $0x8,%r12d
   b:	45 29 dc             	sub    %r11d,%r12d
   e:	49 8d 14 2c          	lea    (%r12,%rbp,1),%rdx
  12:	eb 0c                	jmp    0x20
  14:	48                   	rex.W
  15:	83                   	.byte 0x83
[ 3832.669147][    C1] RSP: 0018:ffffc900034b7a10 EFLAGS: 00000246
[ 3832.669150][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3832.669152][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3832.669154][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3832.669156][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3832.669158][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3832.669160][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3832.669162][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3832.669165][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3832.669167][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3832.669169][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3832.669171][    C1] PKRU: 55555554
[ 3832.669172][    C1] Call Trace:
[ 3832.669174][    C1]  <TASK>
[ 3832.669175][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3832.669180][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3832.669184][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3832.669187][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3832.669191][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3832.669195][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3832.669198][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3832.669201][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3832.669204][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3832.669209][ C1] xa_store (lib/xarray.c:1734) 
[ 3832.669213][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3832.669217][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3832.669222][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3832.669225][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3832.669228][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3832.669232][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3832.669235][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3832.669241][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3832.669245][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3832.669249][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3832.669253][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3832.669257][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3832.669263][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3832.669267][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3832.669271][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3832.669276][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3832.669279][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3832.669283][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3832.669285][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3832.669289][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3832.669294][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3832.669298][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3832.669302][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3832.669305][    C1] RIP: 0033:0x7f439756d93b
[ 3832.669308][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3832.669311][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3832.669313][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3832.669316][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3832.669318][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3832.669319][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3832.669321][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3832.670134][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3832.670142][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3832.670146][ C3] softirqs last disabled at (0): 0x0 
| [ 3832.670158][    C3] Tainted: [L]=SOFTLOCKUP
[ 3832.670160][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3832.670162][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3832.670170][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3832.670172][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3832.670176][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3832.670178][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3832.670180][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3832.670182][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3832.670184][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3832.670186][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3832.670189][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3832.670193][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3832.670194][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3832.670196][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3832.670198][    C3] PKRU: 55555554
[ 3832.670199][    C3] Call Trace:
[ 3832.670203][    C3]  <IRQ>
[ 3832.670204][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3832.670210][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3832.670215][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3832.670219][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3832.670224][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3832.670229][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3832.670232][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3832.670236][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3832.670240][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3832.670243][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3832.670246][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3832.670248][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3832.670251][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3832.670257][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3832.670261][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3832.670264][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3832.670268][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3832.670273][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3832.670278][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3832.670283][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3832.670288][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3832.670294][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3832.670300][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3832.670303][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3832.670306][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3832.670309][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3832.670313][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3832.670316][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3832.670322][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3832.670325][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3832.670328][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3832.670332][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3832.670337][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3832.670340][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3832.670343][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3832.670347][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3832.670351][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3832.670355][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3832.670360][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3832.670363][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3832.670368][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3832.670372][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3832.670376][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3832.670380][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3832.670385][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3832.670391][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3832.670395][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3832.670398][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3832.670403][    C3]  </IRQ>
[ 3832.670404][    C3]  <TASK>
[ 3832.670405][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3832.670411][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3832.670414][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3832.670417][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3832.670420][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3832.670422][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3832.670425][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3832.670427][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3832.670429][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3832.670433][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3832.670439][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3832.670445][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3832.670448][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3832.670453][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3832.670456][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3832.670460][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3832.670463][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3832.670468][ C3] xas_alloc (lib/xarray.c:378) 
[ 3832.670473][ C3] xas_create (lib/xarray.c:685) 
[ 3832.670479][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3832.670483][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3832.670487][ C3] __xa_store (lib/xarray.c:1703) 
[ 3832.670491][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3832.670496][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3832.670498][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3832.670501][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3832.670506][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3832.670510][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3832.670513][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3832.670518][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3832.670522][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3832.670524][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3832.670529][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3832.670532][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3832.670537][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3832.670541][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3832.670546][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3832.670550][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3832.670555][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3832.670563][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3832.670567][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3832.670572][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3832.670577][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3832.670580][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3832.670584][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3832.670587][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3832.670590][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3832.670597][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3832.670600][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3832.670606][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3832.670609][    C3] RIP: 0033:0x7f439756d93b
[ 3832.670613][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3832.670616][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3832.670620][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3832.670622][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3832.670624][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3832.670626][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3832.670628][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3848.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3848.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3848.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 3848.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 3848.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3848.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3848.656144][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3848.656147][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3848.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3848.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3848.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3848.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3848.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3848.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3848.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3848.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3848.656168][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3848.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3848.656172][    C0] PKRU: 55555554
[ 3848.656173][    C0] Call Trace:
[ 3848.656175][    C0]  <TASK>
[ 3848.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3848.656181][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3848.656184][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3848.656187][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3848.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3848.656195][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3848.656198][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3848.656201][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3848.656207][ C0] xa_store (lib/xarray.c:1734) 
[ 3848.656210][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3848.656214][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3848.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3848.656222][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3848.656224][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3848.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3848.656232][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3848.656238][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3848.656242][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3848.656246][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3848.656250][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3848.656255][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3848.656261][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3848.656265][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3848.656269][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3848.656273][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3848.656277][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3848.656280][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3848.656283][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3848.656287][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3848.656292][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3848.656296][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3848.656300][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3848.656303][    C0] RIP: 0033:0x7f439756d93b
[ 3848.656306][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3848.656309][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3848.656311][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3848.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3848.656315][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3848.656317][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3848.656319][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3852.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3852.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3852.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3852.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 3852.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3852.669139][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3852.669144][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3852.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3852.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3852.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3852.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3852.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3852.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3852.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3852.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3852.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3852.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3852.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3852.669171][    C2] PKRU: 55555554
[ 3852.669172][    C2] Call Trace:
[ 3852.669174][    C2]  <TASK>
[ 3852.669176][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3852.669180][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3852.669184][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3852.669187][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3852.669192][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3852.669195][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3852.669198][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3852.669201][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3852.669206][ C2] xa_store (lib/xarray.c:1734) 
[ 3852.669210][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3852.669213][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3852.669218][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3852.669221][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3852.669224][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3852.669228][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3852.669231][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3852.669237][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3852.669241][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3852.669245][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3852.669250][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3852.669254][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3852.669260][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3852.669264][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3852.669268][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3852.669273][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3852.669276][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3852.669280][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3852.669283][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3852.669286][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3852.669291][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3852.669295][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3852.669299][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3852.669303][    C2] RIP: 0033:0x7f439756d93b
[ 3852.669305][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3852.669308][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3852.669311][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3852.669314][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3852.669316][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3852.669317][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3852.669320][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3856.576858][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 3856.577134][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 3856.577535][    C1] NMI backtrace for cpu 1
| [ 3856.577546][    C1] Tainted: [L]=SOFTLOCKUP
[ 3856.577547][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3856.577550][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3856.577555][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3856.577559][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3856.577562][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3856.577564][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3856.577566][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3856.577568][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3856.577570][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3856.577572][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3856.577574][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3856.577577][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3856.577579][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3856.577580][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3856.577582][    C1] PKRU: 55555554
[ 3856.577583][    C1] Call Trace:
[ 3856.577585][    C1]  <TASK>
[ 3856.577587][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3856.577591][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3856.577594][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3856.577597][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3856.577602][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3856.577605][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3856.577608][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3856.577611][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3856.577616][ C1] xa_store (lib/xarray.c:1734) 
[ 3856.577620][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3856.577623][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3856.577628][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3856.577631][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3856.577634][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3856.577638][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3856.577641][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3856.577646][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3856.577650][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3856.577655][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3856.577659][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3856.577663][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3856.577669][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3856.577673][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3856.577677][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3856.577682][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3856.577685][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3856.577688][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3856.577692][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3856.577695][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3856.577700][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3856.577703][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3856.577708][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3856.577711][    C1] RIP: 0033:0x7f439756d93b
[ 3856.577714][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3856.577716][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3856.577719][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3856.577721][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3856.577723][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3856.577725][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3856.577727][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3856.577725][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 3856.577727][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3856.577732][    C1]  </TASK>
| [ 3856.578542][    C3] Tainted: [L]=SOFTLOCKUP
[ 3856.578544][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3856.578546][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3856.578552][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3856.578555][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3856.578558][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3856.578561][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3856.578563][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3856.578565][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3856.578567][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3856.578569][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3856.578572][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3856.578576][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3856.578579][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3856.578581][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3856.578583][    C3] PKRU: 55555554
[ 3856.578584][    C3] Call Trace:
[ 3856.578586][    C3]  <IRQ>
[ 3856.578587][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3856.578593][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3856.578597][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3856.578601][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3856.578604][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3856.578609][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3856.578612][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3856.578616][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3856.578619][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3856.578622][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3856.578624][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3856.578627][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3856.578630][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3856.578636][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3856.578639][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3856.578642][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3856.578645][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3856.578651][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3856.578655][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3856.578660][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3856.578664][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3856.578670][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3856.578675][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3856.578678][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3856.578681][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3856.578684][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3856.578688][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3856.578690][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3856.578696][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3856.578699][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3856.578702][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3856.578707][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3856.578711][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3856.578715][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3856.578717][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3856.578721][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3856.578725][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3856.578729][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3856.578733][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3856.578736][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3856.578741][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3856.578745][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3856.578748][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3856.578753][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3856.578757][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3856.578763][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3856.578766][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3856.578769][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3856.578772][    C3]  </IRQ>
[ 3856.578773][    C3]  <TASK>
[ 3856.578775][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3856.578779][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3856.578782][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3856.578784][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3856.578787][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3856.578789][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3856.578790][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3856.578792][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3856.578794][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3856.578799][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3856.578804][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3856.578809][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3856.578813][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3856.578818][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3856.578821][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3856.578825][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3856.578827][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3856.578833][ C3] xas_alloc (lib/xarray.c:378) 
[ 3856.578837][ C3] xas_create (lib/xarray.c:685) 
[ 3856.578843][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3856.578848][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3856.578851][ C3] __xa_store (lib/xarray.c:1703) 
[ 3856.578855][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3856.578860][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3856.578863][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3856.578866][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3856.578870][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3856.578874][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3856.578877][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3856.578882][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3856.578885][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3856.578887][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3856.578891][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3856.578894][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3856.578899][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3856.578903][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3856.578907][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3856.578911][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3856.578915][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3856.578922][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3856.578925][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3856.578930][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3856.578935][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3856.578939][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3856.578942][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3856.578945][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3856.578948][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3856.578954][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3856.578958][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3856.578963][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3856.578965][    C3] RIP: 0033:0x7f439756d93b
[ 3856.578970][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3856.578973][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3856.578975][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3856.578977][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3856.578979][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3856.578980][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3856.578982][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3876.656118][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3876.656123][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3876.656126][ C0] softirqs last disabled at (0): 0x0 
| [ 3876.656135][    C0] Tainted: [L]=SOFTLOCKUP
[ 3876.656137][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3876.656138][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3876.656143][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3876.656146][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3876.656149][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3876.656151][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3876.656153][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3876.656155][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3876.656157][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3876.656159][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3876.656161][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3876.656165][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3876.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3876.656168][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3876.656170][    C0] PKRU: 55555554
[ 3876.656171][    C0] Call Trace:
[ 3876.656173][    C0]  <TASK>
[ 3876.656175][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3876.656179][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3876.656183][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3876.656186][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3876.656191][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3876.656194][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3876.656197][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3876.656200][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3876.656206][ C0] xa_store (lib/xarray.c:1734) 
[ 3876.656209][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3876.656213][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3876.656217][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3876.656220][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3876.656223][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3876.656228][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3876.656231][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3876.656237][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3876.656240][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3876.656245][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3876.656249][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3876.656253][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3876.656260][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3876.656264][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3876.656268][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3876.656272][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3876.656276][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3876.656279][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3876.656282][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3876.656286][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3876.656291][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3876.656295][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3876.656299][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3876.656302][    C0] RIP: 0033:0x7f439756d93b
[ 3876.656305][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3876.656308][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3876.656311][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3876.656313][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3876.656315][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3876.656317][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3876.656318][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3880.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3880.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3880.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3880.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 3880.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3880.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3880.669145][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3880.669148][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3880.669151][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3880.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3880.669155][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3880.669157][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3880.669159][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3880.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3880.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3880.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3880.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3880.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3880.669171][    C2] PKRU: 55555554
[ 3880.669173][    C2] Call Trace:
[ 3880.669175][    C2]  <TASK>
[ 3880.669177][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3880.669181][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3880.669184][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3880.669187][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3880.669192][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3880.669196][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3880.669198][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3880.669201][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3880.669206][ C2] xa_store (lib/xarray.c:1734) 
[ 3880.669210][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3880.669214][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3880.669218][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3880.669222][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3880.669225][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3880.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3880.669232][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3880.669237][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3880.669241][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3880.669246][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3880.669250][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3880.669254][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3880.669260][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3880.669264][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3880.669268][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3880.669272][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3880.669276][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3880.669280][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3880.669282][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3880.669286][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3880.669291][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3880.669295][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3880.669299][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3880.669302][    C2] RIP: 0033:0x7f439756d93b
[ 3880.669305][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3880.669308][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3880.669311][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3880.669313][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3880.669315][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3880.669318][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3880.669319][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3880.669346][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3880.669351][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3880.669355][ C1] softirqs last disabled at (0): 0x0 
| [ 3880.669364][    C1] Tainted: [L]=SOFTLOCKUP
[ 3880.669365][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3880.669367][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3880.669372][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3880.669375][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3880.669378][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3880.669380][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3880.669382][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3880.669383][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3880.669386][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3880.669387][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3880.669390][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3880.669393][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3880.669395][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3880.669396][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3880.669398][    C1] PKRU: 55555554
[ 3880.669399][    C1] Call Trace:
[ 3880.669401][    C1]  <TASK>
[ 3880.669403][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3880.669406][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3880.669410][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3880.669413][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3880.669418][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3880.669422][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3880.669425][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3880.669428][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3880.669433][ C1] xa_store (lib/xarray.c:1734) 
[ 3880.669437][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3880.669441][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3880.669446][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3880.669449][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3880.669451][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3880.669456][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3880.669459][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3880.669464][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3880.669468][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3880.669473][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3880.669477][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3880.669481][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3880.669488][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3880.669492][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3880.669496][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3880.669500][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3880.669503][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3880.669507][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3880.669510][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3880.669513][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3880.669518][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3880.669522][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3880.669526][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3880.669529][    C1] RIP: 0033:0x7f439756d93b
[ 3880.669532][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3880.669535][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3880.669538][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3880.669539][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3880.669541][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3880.669543][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3880.669545][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3880.670135][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3880.670143][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3880.670147][ C3] softirqs last disabled at (0): 0x0 
| [ 3880.670160][    C3] Tainted: [L]=SOFTLOCKUP
[ 3880.670161][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3880.670164][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3880.670172][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3880.670176][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3880.670179][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3880.670182][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3880.670184][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3880.670186][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3880.670188][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3880.670190][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3880.670193][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3880.670197][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3880.670199][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3880.670201][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3880.670203][    C3] PKRU: 55555554
[ 3880.670204][    C3] Call Trace:
[ 3880.670208][    C3]  <IRQ>
[ 3880.670210][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3880.670216][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3880.670221][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3880.670225][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3880.670230][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3880.670235][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3880.670238][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3880.670243][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3880.670246][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3880.670249][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3880.670252][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3880.670255][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3880.670258][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3880.670263][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3880.670268][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3880.670271][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3880.670275][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3880.670280][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3880.670284][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3880.670290][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3880.670295][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3880.670302][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3880.670308][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3880.670311][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3880.670314][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3880.670317][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3880.670321][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3880.670324][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3880.670330][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3880.670333][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3880.670336][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3880.670341][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3880.670345][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3880.670349][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3880.670352][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3880.670356][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3880.670359][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3880.670364][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3880.670369][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3880.670372][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3880.670377][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3880.670381][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3880.670385][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3880.670389][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3880.670394][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3880.670400][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3880.670404][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3880.670408][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3880.670412][    C3]  </IRQ>
[ 3880.670413][    C3]  <TASK>
[ 3880.670415][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3880.670420][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3880.670424][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3880.670427][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3880.670430][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3880.670432][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3880.670434][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3880.670436][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3880.670439][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3880.670443][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3880.670449][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3880.670455][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3880.670458][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3880.670463][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3880.670466][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3880.670470][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3880.670473][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3880.670478][ C3] xas_alloc (lib/xarray.c:378) 
[ 3880.670482][ C3] xas_create (lib/xarray.c:685) 
[ 3880.670489][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3880.670493][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3880.670497][ C3] __xa_store (lib/xarray.c:1703) 
[ 3880.670501][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3880.670506][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3880.670509][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3880.670512][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3880.670517][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3880.670521][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3880.670525][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3880.670530][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3880.670533][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3880.670536][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3880.670540][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3880.670544][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3880.670548][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3880.670552][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3880.670557][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3880.670561][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3880.670566][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3880.670574][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3880.670578][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3880.670583][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3880.670588][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3880.670591][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3880.670595][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3880.670597][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3880.670601][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3880.670607][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3880.670611][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3880.670615][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3880.670619][    C3] RIP: 0033:0x7f439756d93b
[ 3880.670624][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3880.670626][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3880.670629][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3880.670632][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3880.670634][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3880.670635][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3880.670637][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3904.656130][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3904.656138][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3904.656142][ C0] softirqs last disabled at (0): 0x0 
| [ 3904.656152][    C0] Tainted: [L]=SOFTLOCKUP
[ 3904.656154][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3904.656156][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3904.656163][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3904.656166][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3904.656169][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3904.656171][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3904.656174][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3904.656176][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3904.656177][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3904.656180][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3904.656182][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3904.656186][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3904.656188][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3904.656190][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3904.656191][    C0] PKRU: 55555554
[ 3904.656193][    C0] Call Trace:
[ 3904.656197][    C0]  <TASK>
[ 3904.656200][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3904.656204][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3904.656213][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3904.656217][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3904.656223][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3904.656226][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3904.656229][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3904.656232][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3904.656238][ C0] xa_store (lib/xarray.c:1734) 
[ 3904.656242][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3904.656247][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3904.656252][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3904.656255][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3904.656258][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3904.656264][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3904.656268][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3904.656275][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3904.656279][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3904.656283][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3904.656288][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3904.656293][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3904.656301][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3904.656305][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3904.656311][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3904.656316][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3904.656319][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3904.656324][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3904.656327][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3904.656330][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3904.656337][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3904.656341][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3904.656346][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3904.656350][    C0] RIP: 0033:0x7f439756d93b
[ 3904.656354][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3904.656356][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3904.656359][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3904.656361][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3904.656363][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3904.656365][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3904.656367][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3908.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3908.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3908.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3908.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 3908.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3908.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3908.669144][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3908.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3908.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3908.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3908.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3908.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3908.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3908.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3908.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3908.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3908.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3908.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3908.669171][    C2] PKRU: 55555554
[ 3908.669172][    C2] Call Trace:
[ 3908.669174][    C2]  <TASK>
[ 3908.669178][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3908.669181][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3908.669185][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3908.669189][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3908.669194][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3908.669197][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3908.669200][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3908.669203][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3908.669208][ C2] xa_store (lib/xarray.c:1734) 
[ 3908.669213][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3908.669216][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3908.669221][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3908.669224][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3908.669227][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3908.669232][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3908.669235][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3908.669241][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3908.669244][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3908.669249][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3908.669253][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3908.669258][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3908.669264][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3908.669268][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3908.669272][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3908.669277][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3908.669280][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3908.669284][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3908.669287][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3908.669290][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3908.669296][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3908.669299][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3908.669304][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3908.669307][    C2] RIP: 0033:0x7f439756d93b
[ 3908.669310][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3908.669313][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3908.669316][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3908.669318][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3908.669320][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3908.669322][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3908.669324][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3908.669349][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3908.669354][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3908.669358][ C1] softirqs last disabled at (0): 0x0 
| [ 3908.669367][    C1] Tainted: [L]=SOFTLOCKUP
[ 3908.669368][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3908.669370][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3908.669374][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3908.669377][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3908.669380][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3908.669382][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3908.669384][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3908.669386][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3908.669388][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3908.669390][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3908.669392][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3908.669396][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3908.669398][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3908.669400][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3908.669402][    C1] PKRU: 55555554
[ 3908.669403][    C1] Call Trace:
[ 3908.669405][    C1]  <TASK>
[ 3908.669408][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3908.669411][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3908.669415][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3908.669418][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3908.669423][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3908.669426][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3908.669429][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3908.669432][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3908.669438][ C1] xa_store (lib/xarray.c:1734) 
[ 3908.669442][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3908.669446][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3908.669451][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3908.669453][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3908.669456][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3908.669461][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3908.669464][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3908.669470][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3908.669474][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3908.669478][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3908.669482][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3908.669486][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3908.669493][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3908.669496][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3908.669500][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3908.669505][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3908.669508][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3908.669512][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3908.669515][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3908.669518][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3908.669523][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3908.669527][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3908.669532][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3908.669535][    C1] RIP: 0033:0x7f439756d93b
[ 3908.669538][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3908.669540][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3908.669543][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3908.669545][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3908.669547][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3908.669549][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3908.669550][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3908.670153][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3908.670162][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3908.670166][ C3] softirqs last disabled at (0): 0x0 
| [ 3908.670178][    C3] Tainted: [L]=SOFTLOCKUP
[ 3908.670180][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3908.670183][ C3] RIP: 0010:kasan_check_range (./include/linux/kasan.h:64 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3908.670188][ C3] Code: 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df <4d> 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d
All code
========
   0:	5b                   	pop    %rbx
   1:	5d                   	pop    %rbp
   2:	41 5c                	pop    %r12
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  10:	7f ff ff 
  13:	48 39 c7             	cmp    %rax,%rdi
  16:	76 dd                	jbe    0xfffffffffffffff5
  18:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  1d:	48 89 fd             	mov    %rdi,%rbp
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df 
  2a:*	4d 89 d1             	mov    %r10,%r9		<-- trapping instruction
  2d:	48 c1 ed 03          	shr    $0x3,%rbp
  31:	49 c1 e9 03          	shr    $0x3,%r9
  35:	48 01 c5             	add    %rax,%rbp
  38:	49 01 c1             	add    %rax,%r9
  3b:	48 89 e8             	mov    %rbp,%rax
  3e:	49                   	rex.WB
  3f:	8d                   	.byte 0x8d

Code starting with the faulting instruction
===========================================
   0:	4d 89 d1             	mov    %r10,%r9
   3:	48 c1 ed 03          	shr    $0x3,%rbp
   7:	49 c1 e9 03          	shr    $0x3,%r9
   b:	48 01 c5             	add    %rax,%rbp
   e:	49 01 c1             	add    %rax,%r9
  11:	48 89 e8             	mov    %rbp,%rax
  14:	49                   	rex.WB
  15:	8d                   	.byte 0x8d
[ 3908.670192][    C3] RSP: 0018:ffffc90000270a28 EFLAGS: 00000212
[ 3908.670196][    C3] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3908.670198][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3908.670200][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3908.670202][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3908.670204][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3908.670206][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3908.670209][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3908.670214][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3908.670216][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3908.670217][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3908.670219][    C3] PKRU: 55555554
[ 3908.670220][    C3] Call Trace:
[ 3908.670224][    C3]  <IRQ>
[ 3908.670228][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3908.670235][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3908.670240][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3908.670244][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3908.670247][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3908.670252][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3908.670257][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3908.670260][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3908.670264][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3908.670268][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3908.670271][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3908.670274][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3908.670277][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3908.670280][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3908.670286][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3908.670292][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3908.670294][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3908.670298][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3908.670304][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3908.670308][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3908.670314][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3908.670319][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3908.670325][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3908.670331][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3908.670334][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3908.670338][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3908.670341][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3908.670345][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3908.670348][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3908.670354][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3908.670357][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3908.670360][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3908.670365][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3908.670369][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3908.670373][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3908.670375][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3908.670379][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3908.670383][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3908.670388][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3908.670393][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3908.670396][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3908.670401][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3908.670406][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3908.670409][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3908.670414][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3908.670418][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3908.670424][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3908.670429][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3908.670432][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3908.670436][    C3]  </IRQ>
[ 3908.670437][    C3]  <TASK>
[ 3908.670439][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3908.670444][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3908.670447][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3908.670450][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3908.670454][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3908.670456][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3908.670458][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3908.670460][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3908.670462][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3908.670467][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3908.670473][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3908.670479][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3908.670483][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3908.670487][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3908.670490][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3908.670495][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3908.670498][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3908.670504][ C3] xas_alloc (lib/xarray.c:378) 
[ 3908.670508][ C3] xas_create (lib/xarray.c:685) 
[ 3908.670515][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3908.670519][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3908.670523][ C3] __xa_store (lib/xarray.c:1703) 
[ 3908.670527][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3908.670532][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3908.670534][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3908.670537][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3908.670542][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3908.670546][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3908.670549][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3908.670554][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3908.670557][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3908.670560][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3908.670564][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3908.670567][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3908.670572][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3908.670575][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3908.670580][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3908.670584][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3908.670589][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3908.670597][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3908.670601][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3908.670606][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3908.670611][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3908.670614][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3908.670618][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3908.670620][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3908.670624][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3908.670630][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3908.670634][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3908.670639][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3908.670642][    C3] RIP: 0033:0x7f439756d93b
[ 3908.670646][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3908.670649][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3908.670652][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3908.670654][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3908.670656][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3908.670657][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3908.670659][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3932.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3932.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3932.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 3932.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 3932.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3932.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3932.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3932.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3932.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3932.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3932.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3932.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3932.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3932.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3932.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3932.656165][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3932.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3932.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3932.656171][    C0] PKRU: 55555554
[ 3932.656172][    C0] Call Trace:
[ 3932.656174][    C0]  <TASK>
[ 3932.656176][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3932.656180][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3932.656184][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3932.656187][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3932.656192][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3932.656195][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3932.656198][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3932.656201][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3932.656206][ C0] xa_store (lib/xarray.c:1734) 
[ 3932.656210][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3932.656214][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3932.656218][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3932.656221][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3932.656224][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3932.656228][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3932.656232][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3932.656237][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3932.656241][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3932.656246][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3932.656250][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3932.656254][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3932.656261][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3932.656265][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3932.656269][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3932.656273][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3932.656276][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3932.656280][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3932.656283][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3932.656287][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3932.656292][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3932.656295][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3932.656300][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3932.656303][    C0] RIP: 0033:0x7f439756d93b
[ 3932.656305][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3932.656308][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3932.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3932.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3932.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3932.656318][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3932.656320][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3934.589894][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 3934.590171][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 3934.590409][    C1] NMI backtrace for cpu 1
| [ 3934.590419][    C1] Tainted: [L]=SOFTLOCKUP
[ 3934.590421][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3934.590423][ C1] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 3934.590428][ C1] Code: 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 <48> 01 f0 55 53 72 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe
All code
========
   0:	0f 1f 40 00          	nopl   0x0(%rax)
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	66 0f 1f 00          	nopw   (%rax)
  18:	48 85 f6             	test   %rsi,%rsi
  1b:	0f 84 5e 01 00 00    	je     0x17f
  21:	48 89 f8             	mov    %rdi,%rax
  24:	41 54                	push   %r12
  26:	44 0f b6 c2          	movzbl %dl,%r8d
  2a:*	48 01 f0             	add    %rsi,%rax		<-- trapping instruction
  2d:	55                   	push   %rbp
  2e:	53                   	push   %rbx
  2f:	72 14                	jb     0x45
  31:	eb 26                	jmp    0x59
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  3d:	ff ff fe 

Code starting with the faulting instruction
===========================================
   0:	48 01 f0             	add    %rsi,%rax
   3:	55                   	push   %rbp
   4:	53                   	push   %rbx
   5:	72 14                	jb     0x1b
   7:	eb 26                	jmp    0x2f
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  13:	ff ff fe 
[ 3934.590431][    C1] RSP: 0018:ffffc900034b7a08 EFLAGS: 00000202
[ 3934.590434][    C1] RAX: ffffffffbbee5c00 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3934.590436][    C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3934.590438][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3934.590440][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3934.590442][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3934.590444][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3934.590447][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3934.590450][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3934.590451][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3934.590453][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3934.590455][    C1] PKRU: 55555554
[ 3934.590456][    C1] Call Trace:
[ 3934.590457][    C1]  <TASK>
[ 3934.590458][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3934.590463][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3934.590467][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3934.590470][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3934.590473][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3934.590478][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3934.590481][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3934.590483][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3934.590486][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3934.590491][ C1] xa_store (lib/xarray.c:1734) 
[ 3934.590495][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3934.590498][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3934.590503][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3934.590506][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3934.590508][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3934.590513][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3934.590516][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3934.590521][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3934.590525][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3934.590529][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3934.590533][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3934.590537][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3934.590543][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3934.590547][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3934.590551][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3934.590555][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3934.590558][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3934.590561][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3934.590564][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3934.590568][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3934.590573][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3934.590576][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3934.590581][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3934.590584][    C1] RIP: 0033:0x7f439756d93b
[ 3934.590587][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3934.590589][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3934.590592][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3934.590594][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3934.590596][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3934.590598][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3934.590599][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3934.590598][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 3934.590599][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3934.590605][    C1]  </TASK>
| [ 3934.591415][    C3] Tainted: [L]=SOFTLOCKUP
[ 3934.591416][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3934.591418][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3934.591423][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3934.591426][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3934.591430][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3934.591432][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3934.591434][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3934.591436][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3934.591438][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3934.591440][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3934.591443][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3934.591447][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3934.591449][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3934.591450][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3934.591452][    C3] PKRU: 55555554
[ 3934.591454][    C3] Call Trace:
[ 3934.591455][    C3]  <IRQ>
[ 3934.591457][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3934.591462][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3934.591466][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3934.591469][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3934.591472][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3934.591477][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3934.591480][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3934.591484][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3934.591487][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3934.591490][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3934.591493][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3934.591496][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3934.591499][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3934.591504][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3934.591507][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3934.591510][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3934.591513][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3934.591518][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3934.591522][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3934.591527][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3934.591531][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3934.591537][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3934.591542][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3934.591545][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3934.591548][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3934.591551][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3934.591554][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3934.591557][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3934.591562][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3934.591565][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3934.591568][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3934.591572][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3934.591576][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3934.591579][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3934.591582][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3934.591586][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3934.591589][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3934.591594][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3934.591598][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3934.591602][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3934.591607][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3934.591611][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3934.591614][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3934.591619][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3934.591623][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3934.591629][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3934.591632][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3934.591635][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3934.591639][    C3]  </IRQ>
[ 3934.591640][    C3]  <TASK>
[ 3934.591641][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3934.591645][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3934.591648][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3934.591651][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3934.591653][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3934.591655][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3934.591657][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3934.591659][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3934.591661][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3934.591665][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3934.591671][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3934.591676][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3934.591680][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3934.591684][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3934.591687][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3934.591691][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3934.591694][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3934.591699][ C3] xas_alloc (lib/xarray.c:378) 
[ 3934.591703][ C3] xas_create (lib/xarray.c:685) 
[ 3934.591709][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3934.591713][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3934.591717][ C3] __xa_store (lib/xarray.c:1703) 
[ 3934.591720][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3934.591726][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3934.591728][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3934.591731][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3934.591736][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3934.591740][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3934.591743][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3934.591748][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3934.591751][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3934.591754][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3934.591758][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3934.591761][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3934.591766][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3934.591770][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3934.591774][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3934.591778][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3934.591782][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3934.591789][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3934.591792][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3934.591798][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3934.591804][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3934.591807][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3934.591812][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3934.591814][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3934.591818][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3934.591824][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3934.591828][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3934.591832][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3934.591835][    C3] RIP: 0033:0x7f439756d93b
[ 3934.591839][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3934.591842][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3934.591844][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3934.591846][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3934.591848][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3934.591850][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3934.591851][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3936.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3936.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3936.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3936.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 3936.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3936.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3936.669145][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3936.669148][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3936.669151][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3936.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3936.669155][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3936.669157][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3936.669159][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3936.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3936.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3936.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3936.669169][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3936.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3936.669172][    C2] PKRU: 55555554
[ 3936.669173][    C2] Call Trace:
[ 3936.669174][    C2]  <TASK>
[ 3936.669177][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3936.669180][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3936.669184][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3936.669188][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3936.669193][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3936.669196][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3936.669199][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3936.669201][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3936.669207][ C2] xa_store (lib/xarray.c:1734) 
[ 3936.669210][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3936.669214][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3936.669219][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3936.669221][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3936.669224][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3936.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3936.669232][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3936.669238][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3936.669241][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3936.669246][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3936.669250][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3936.669254][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3936.669261][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3936.669264][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3936.669268][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3936.669273][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3936.669277][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3936.669280][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3936.669283][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3936.669286][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3936.669291][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3936.669295][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3936.669300][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3936.669303][    C2] RIP: 0033:0x7f439756d93b
[ 3936.669306][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3936.669309][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3936.669312][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3936.669314][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3936.669315][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3936.669317][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3936.669319][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3960.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3960.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3960.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 3960.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 3960.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3960.656140][ C0] RIP: 0010:kasan_check_range (./include/linux/kasan.h:64 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3960.656144][ C0] Code: 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df <4d> 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d
All code
========
   0:	5b                   	pop    %rbx
   1:	5d                   	pop    %rbp
   2:	41 5c                	pop    %r12
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  10:	7f ff ff 
  13:	48 39 c7             	cmp    %rax,%rdi
  16:	76 dd                	jbe    0xfffffffffffffff5
  18:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  1d:	48 89 fd             	mov    %rdi,%rbp
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df 
  2a:*	4d 89 d1             	mov    %r10,%r9		<-- trapping instruction
  2d:	48 c1 ed 03          	shr    $0x3,%rbp
  31:	49 c1 e9 03          	shr    $0x3,%r9
  35:	48 01 c5             	add    %rax,%rbp
  38:	49 01 c1             	add    %rax,%r9
  3b:	48 89 e8             	mov    %rbp,%rax
  3e:	49                   	rex.WB
  3f:	8d                   	.byte 0x8d

Code starting with the faulting instruction
===========================================
   0:	4d 89 d1             	mov    %r10,%r9
   3:	48 c1 ed 03          	shr    $0x3,%rbp
   7:	49 c1 e9 03          	shr    $0x3,%r9
   b:	48 01 c5             	add    %rax,%rbp
   e:	49 01 c1             	add    %rax,%r9
  11:	48 89 e8             	mov    %rbp,%rax
  14:	49                   	rex.WB
  15:	8d                   	.byte 0x8d
[ 3960.656147][    C0] RSP: 0018:ffffc900034c79f8 EFLAGS: 00000212
[ 3960.656149][    C0] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3960.656152][    C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3960.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3960.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3960.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3960.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3960.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3960.656165][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3960.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3960.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3960.656170][    C0] PKRU: 55555554
[ 3960.656172][    C0] Call Trace:
[ 3960.656173][    C0]  <TASK>
[ 3960.656176][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3960.656181][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3960.656184][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3960.656188][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3960.656191][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3960.656196][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3960.656199][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3960.656202][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3960.656205][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3960.656210][ C0] xa_store (lib/xarray.c:1734) 
[ 3960.656214][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3960.656217][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3960.656222][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3960.656225][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3960.656228][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3960.656232][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3960.656236][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3960.656241][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3960.656245][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3960.656250][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3960.656254][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3960.656258][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3960.656264][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3960.656268][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3960.656273][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3960.656277][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3960.656280][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3960.656284][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3960.656286][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3960.656290][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3960.656295][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3960.656299][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3960.656303][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3960.656306][    C0] RIP: 0033:0x7f439756d93b
[ 3960.656310][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3960.656313][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3960.656316][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3960.656318][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3960.656320][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3960.656322][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3960.656324][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3960.669121][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3960.669126][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3960.669129][ C1] softirqs last disabled at (0): 0x0 
| [ 3960.669138][    C1] Tainted: [L]=SOFTLOCKUP
[ 3960.669140][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3960.669142][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3960.669147][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3960.669150][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3960.669152][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3960.669154][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3960.669157][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3960.669159][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3960.669160][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3960.669163][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3960.669165][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3960.669168][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3960.669170][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3960.669172][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3960.669174][    C1] PKRU: 55555554
[ 3960.669175][    C1] Call Trace:
[ 3960.669176][    C1]  <TASK>
[ 3960.669179][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3960.669182][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3960.669186][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3960.669189][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3960.669194][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3960.669197][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3960.669200][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3960.669203][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3960.669209][ C1] xa_store (lib/xarray.c:1734) 
[ 3960.669213][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3960.669216][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3960.669221][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3960.669224][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3960.669227][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3960.669231][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3960.669234][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3960.669240][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3960.669243][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3960.669248][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3960.669252][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3960.669257][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3960.669263][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3960.669267][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3960.669271][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3960.669275][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3960.669278][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3960.669282][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3960.669284][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3960.669288][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3960.669293][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3960.669297][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3960.669301][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3960.669304][    C1] RIP: 0033:0x7f439756d93b
[ 3960.669307][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3960.669310][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3960.669313][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3960.669315][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3960.669317][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3960.669318][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3960.669320][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3960.670134][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3960.670142][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3960.670146][ C3] softirqs last disabled at (0): 0x0 
| [ 3960.670158][    C3] Tainted: [L]=SOFTLOCKUP
[ 3960.670159][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3960.670162][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3960.670170][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3960.670173][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3960.670177][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3960.670179][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3960.670181][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3960.670183][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3960.670185][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3960.670187][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3960.670190][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3960.670194][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3960.670196][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3960.670198][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3960.670200][    C3] PKRU: 55555554
[ 3960.670201][    C3] Call Trace:
[ 3960.670204][    C3]  <IRQ>
[ 3960.670206][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3960.670212][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3960.670218][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3960.670221][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3960.670226][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3960.670231][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3960.670234][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3960.670238][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3960.670241][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3960.670245][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3960.670247][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3960.670250][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3960.670252][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3960.670258][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3960.670263][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3960.670266][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3960.670269][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3960.670275][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3960.670279][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3960.670284][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3960.670289][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3960.670296][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3960.670301][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3960.670304][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3960.670307][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3960.670310][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3960.670314][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3960.670316][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3960.670322][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3960.670325][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3960.670328][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3960.670333][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3960.670337][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3960.670341][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3960.670343][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3960.670347][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3960.670350][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3960.670355][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3960.670360][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3960.670363][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3960.670368][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3960.670372][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3960.670375][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3960.670380][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3960.670384][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3960.670390][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3960.670394][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3960.670397][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3960.670401][    C3]  </IRQ>
[ 3960.670403][    C3]  <TASK>
[ 3960.670404][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3960.670409][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3960.670413][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3960.670416][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3960.670418][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3960.670420][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3960.670423][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3960.670425][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3960.670427][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3960.670431][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3960.670437][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3960.670443][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3960.670446][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3960.670451][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3960.670454][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3960.670458][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3960.670461][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3960.670466][ C3] xas_alloc (lib/xarray.c:378) 
[ 3960.670471][ C3] xas_create (lib/xarray.c:685) 
[ 3960.670477][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3960.670481][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3960.670485][ C3] __xa_store (lib/xarray.c:1703) 
[ 3960.670489][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3960.670493][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3960.670496][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3960.670499][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3960.670504][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3960.670507][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3960.670510][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3960.670515][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3960.670518][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3960.670521][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3960.670525][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3960.670529][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3960.670533][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3960.670537][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3960.670542][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3960.670546][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3960.670550][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3960.670558][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3960.670562][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3960.670567][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3960.670571][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3960.670574][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3960.670578][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3960.670580][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3960.670584][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3960.670590][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3960.670593][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3960.670598][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3960.670602][    C3] RIP: 0033:0x7f439756d93b
[ 3960.670606][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3960.670609][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3960.670612][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3960.670614][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3960.670616][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3960.670618][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3960.670619][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3964.669127][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3964.669135][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3964.669139][ C2] softirqs last disabled at (0): 0x0 
| [ 3964.669149][    C2] Tainted: [L]=SOFTLOCKUP
[ 3964.669151][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3964.669153][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3964.669158][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3964.669161][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 3964.669164][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3964.669166][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3964.669168][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3964.669170][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3964.669172][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3964.669174][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3964.669177][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3964.669180][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3964.669182][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3964.669184][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3964.669186][    C2] PKRU: 55555554
[ 3964.669187][    C2] Call Trace:
[ 3964.669189][    C2]  <TASK>
[ 3964.669192][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3964.669197][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3964.669201][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3964.669204][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3964.669209][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3964.669212][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3964.669215][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3964.669218][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3964.669223][ C2] xa_store (lib/xarray.c:1734) 
[ 3964.669227][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3964.669231][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3964.669236][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3964.669239][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3964.669242][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3964.669246][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3964.669250][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3964.669259][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3964.669263][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3964.669267][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3964.669271][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3964.669276][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3964.669282][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3964.669286][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3964.669290][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3964.669295][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3964.669298][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3964.669302][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3964.669305][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3964.669308][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3964.669313][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3964.669317][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3964.669321][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3964.669324][    C2] RIP: 0033:0x7f439756d93b
[ 3964.669327][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3964.669330][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3964.669333][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3964.669335][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3964.669337][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3964.669339][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3964.669341][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3988.656121][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3988.656126][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3988.656130][ C0] softirqs last disabled at (0): 0x0 
| [ 3988.656138][    C0] Tainted: [L]=SOFTLOCKUP
[ 3988.656140][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3988.656142][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3988.656147][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3988.656150][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 3988.656152][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3988.656155][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3988.656157][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3988.656158][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 3988.656161][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 3988.656162][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 3988.656165][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3988.656168][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 3988.656170][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3988.656172][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3988.656173][    C0] PKRU: 55555554
[ 3988.656174][    C0] Call Trace:
[ 3988.656177][    C0]  <TASK>
[ 3988.656179][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3988.656183][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3988.656187][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3988.656190][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3988.656196][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3988.656199][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3988.656202][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3988.656205][ C0] ? xa_store (lib/xarray.c:1734) 
[ 3988.656211][ C0] xa_store (lib/xarray.c:1734) 
[ 3988.656215][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3988.656218][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3988.656223][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3988.656226][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3988.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3988.656234][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3988.656237][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3988.656243][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3988.656247][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3988.656252][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3988.656256][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 3988.656261][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3988.656267][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3988.656271][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 3988.656275][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 3988.656280][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3988.656283][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3988.656287][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3988.656289][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3988.656293][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3988.656298][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3988.656302][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3988.656306][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3988.656310][    C0] RIP: 0033:0x7f439756d93b
[ 3988.656313][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3988.656315][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3988.656318][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3988.656320][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3988.656322][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 3988.656324][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3988.656326][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 3988.669119][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3988.669124][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3988.669127][ C1] softirqs last disabled at (0): 0x0 
| [ 3988.669136][    C1] Tainted: [L]=SOFTLOCKUP
[ 3988.669137][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3988.669139][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3988.669144][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3988.669146][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 3988.669149][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3988.669151][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3988.669153][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3988.669155][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 3988.669157][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 3988.669159][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 3988.669162][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3988.669165][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 3988.669167][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3988.669168][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3988.669170][    C1] PKRU: 55555554
[ 3988.669171][    C1] Call Trace:
[ 3988.669173][    C1]  <TASK>
[ 3988.669175][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3988.669179][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3988.669183][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3988.669186][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3988.669191][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3988.669194][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3988.669197][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3988.669200][ C1] ? xa_store (lib/xarray.c:1734) 
[ 3988.669205][ C1] xa_store (lib/xarray.c:1734) 
[ 3988.669209][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3988.669212][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3988.669217][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3988.669221][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3988.669223][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3988.669228][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3988.669231][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3988.669237][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3988.669241][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3988.669245][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3988.669249][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 3988.669254][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3988.669260][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3988.669264][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 3988.669268][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 3988.669272][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3988.669276][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3988.669279][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3988.669282][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3988.669286][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3988.669291][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3988.669295][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3988.669298][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3988.669301][    C1] RIP: 0033:0x7f439756d93b
[ 3988.669304][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3988.669307][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3988.669309][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3988.669311][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3988.669313][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 3988.669315][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3988.669316][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 3988.670134][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3988.670142][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3988.670145][ C3] softirqs last disabled at (0): 0x0 
| [ 3988.670157][    C3] Tainted: [L]=SOFTLOCKUP
[ 3988.670158][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3988.670161][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 3988.670170][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 3988.670173][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 3988.670176][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3988.670179][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3988.670181][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3988.670183][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 3988.670185][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 3988.670187][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 3988.670190][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3988.670193][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 3988.670195][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3988.670197][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3988.670198][    C3] PKRU: 55555554
[ 3988.670200][    C3] Call Trace:
[ 3988.670204][    C3]  <IRQ>
[ 3988.670205][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 3988.670211][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 3988.670216][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3988.670219][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3988.670224][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3988.670228][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3988.670231][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3988.670235][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3988.670239][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 3988.670242][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3988.670245][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3988.670247][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3988.670250][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3988.670256][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3988.670262][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3988.670265][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3988.670269][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3988.670274][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 3988.670278][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 3988.670283][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3988.670287][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3988.670294][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 3988.670300][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3988.670303][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3988.670306][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 3988.670310][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 3988.670313][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 3988.670316][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3988.670321][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3988.670324][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 3988.670327][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 3988.670332][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 3988.670336][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3988.670340][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 3988.670342][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 3988.670346][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3988.670350][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3988.670354][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 3988.670359][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3988.670362][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 3988.670367][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 3988.670371][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3988.670374][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3988.670379][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 3988.670384][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 3988.670390][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 3988.670394][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 3988.670397][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 3988.670401][    C3]  </IRQ>
[ 3988.670403][    C3]  <TASK>
[ 3988.670404][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 3988.670410][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 3988.670413][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 3988.670416][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 3988.670420][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 3988.670422][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 3988.670424][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 3988.670426][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 3988.670428][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 3988.670432][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 3988.670437][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 3988.670443][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 3988.670447][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3988.670451][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3988.670454][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 3988.670458][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 3988.670461][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 3988.670466][ C3] xas_alloc (lib/xarray.c:378) 
[ 3988.670471][ C3] xas_create (lib/xarray.c:685) 
[ 3988.670477][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 3988.670482][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3988.670486][ C3] __xa_store (lib/xarray.c:1703) 
[ 3988.670490][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 3988.670495][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3988.670498][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3988.670501][ C3] ? xa_store (lib/xarray.c:1734) 
[ 3988.670506][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 3988.670510][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3988.670513][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3988.670519][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3988.670522][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3988.670524][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3988.670528][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3988.670532][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3988.670537][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3988.670540][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3988.670545][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3988.670549][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 3988.670554][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3988.670561][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3988.670565][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 3988.670570][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 3988.670575][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3988.670578][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3988.670581][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3988.670584][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3988.670587][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3988.670593][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3988.670597][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3988.670602][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3988.670605][    C3] RIP: 0033:0x7f439756d93b
[ 3988.670609][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3988.670612][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3988.670614][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3988.670616][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3988.670618][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3988.670620][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3988.670622][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 3992.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 3992.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 3992.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 3992.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 3992.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3992.669140][ C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 3992.669144][ C2] Code: ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 <48> 89 e8 49 8d 59 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e c0 00 00
All code
========
   0:	ff                   	(bad)
   1:	ff 48 39             	decl   0x39(%rax)
   4:	c7                   	(bad)
   5:	76 dd                	jbe    0xffffffffffffffe4
   7:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   c:	48 89 fd             	mov    %rdi,%rbp
   f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  16:	fc ff df 
  19:	4d 89 d1             	mov    %r10,%r9
  1c:	48 c1 ed 03          	shr    $0x3,%rbp
  20:	49 c1 e9 03          	shr    $0x3,%r9
  24:	48 01 c5             	add    %rax,%rbp
  27:	49 01 c1             	add    %rax,%r9
  2a:*	48 89 e8             	mov    %rbp,%rax		<-- trapping instruction
  2d:	49 8d 59 01          	lea    0x1(%r9),%rbx
  31:	48 89 da             	mov    %rbx,%rdx
  34:	48 29 ea             	sub    %rbp,%rdx
  37:	48 83 fa 10          	cmp    $0x10,%rdx
  3b:	0f                   	.byte 0xf
  3c:	8e c0                	mov    %eax,%es
	...

Code starting with the faulting instruction
===========================================
   0:	48 89 e8             	mov    %rbp,%rax
   3:	49 8d 59 01          	lea    0x1(%r9),%rbx
   7:	48 89 da             	mov    %rbx,%rdx
   a:	48 29 ea             	sub    %rbp,%rdx
   d:	48 83 fa 10          	cmp    $0x10,%rdx
  11:	0f                   	.byte 0xf
  12:	8e c0                	mov    %eax,%es
	...
[ 3992.669147][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000282
[ 3992.669150][    C2] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 3992.669152][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 3992.669154][    C2] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 3992.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 3992.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 3992.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 3992.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3992.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 3992.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3992.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3992.669171][    C2] PKRU: 55555554
[ 3992.669172][    C2] Call Trace:
[ 3992.669174][    C2]  <TASK>
[ 3992.669176][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 3992.669181][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 3992.669185][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3992.669188][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3992.669191][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 3992.669196][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 3992.669199][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3992.669202][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 3992.669205][ C2] ? xa_store (lib/xarray.c:1734) 
[ 3992.669210][ C2] xa_store (lib/xarray.c:1734) 
[ 3992.669214][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 3992.669218][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 3992.669223][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 3992.669225][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 3992.669228][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3992.669233][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 3992.669236][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 3992.669242][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 3992.669246][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 3992.669250][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 3992.669254][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 3992.669259][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 3992.669265][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 3992.669269][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 3992.669273][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 3992.669277][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 3992.669281][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 3992.669284][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 3992.669287][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 3992.669290][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 3992.669296][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 3992.669300][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 3992.669304][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3992.669307][    C2] RIP: 0033:0x7f439756d93b
[ 3992.669310][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 3992.669312][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 3992.669315][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 3992.669317][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 3992.669320][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 3992.669321][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 3992.669323][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4012.604479][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 4012.604759][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 4012.604997][    C1] NMI backtrace for cpu 1
| [ 4012.605007][    C1] Tainted: [L]=SOFTLOCKUP
[ 4012.605008][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4012.605010][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4012.605015][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4012.605018][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4012.605021][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4012.605023][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4012.605025][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4012.605027][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4012.605029][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4012.605031][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4012.605033][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4012.605036][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4012.605038][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4012.605040][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4012.605041][    C1] PKRU: 55555554
[ 4012.605042][    C1] Call Trace:
[ 4012.605044][    C1]  <TASK>
[ 4012.605047][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4012.605050][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4012.605054][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4012.605057][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4012.605062][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4012.605065][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4012.605068][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4012.605070][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4012.605075][ C1] xa_store (lib/xarray.c:1734) 
[ 4012.605079][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4012.605083][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4012.605087][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4012.605090][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4012.605093][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4012.605097][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4012.605101][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4012.605106][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4012.605110][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4012.605114][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4012.605118][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4012.605123][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4012.605130][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4012.605133][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4012.605137][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4012.605142][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4012.605145][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4012.605149][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4012.605152][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4012.605155][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4012.605160][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4012.605164][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4012.605168][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4012.605172][    C1] RIP: 0033:0x7f439756d93b
[ 4012.605175][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4012.605178][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4012.605180][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4012.605182][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4012.605184][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4012.605186][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4012.605188][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4012.605186][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 4012.605188][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4012.605194][    C1]  </TASK>
| [ 4012.606003][    C3] Tainted: [L]=SOFTLOCKUP
[ 4012.606005][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4012.606007][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4012.606012][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4012.606016][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4012.606019][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4012.606021][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4012.606023][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4012.606025][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4012.606027][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4012.606029][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4012.606032][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4012.606036][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4012.606038][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4012.606040][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4012.606042][    C3] PKRU: 55555554
[ 4012.606043][    C3] Call Trace:
[ 4012.606045][    C3]  <IRQ>
[ 4012.606046][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4012.606051][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4012.606056][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4012.606059][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4012.606062][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4012.606067][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4012.606071][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4012.606075][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4012.606078][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4012.606081][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4012.606084][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4012.606086][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4012.606089][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4012.606095][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4012.606098][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4012.606101][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4012.606104][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4012.606109][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4012.606113][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4012.606118][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4012.606122][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4012.606128][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4012.606133][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4012.606136][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4012.606139][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4012.606142][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4012.606145][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4012.606148][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4012.606154][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4012.606157][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4012.606160][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4012.606164][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4012.606168][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4012.606171][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4012.606174][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4012.606177][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4012.606181][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4012.606185][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4012.606189][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4012.606192][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4012.606197][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4012.606201][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4012.606204][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4012.606209][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4012.606213][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4012.606218][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4012.606221][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4012.606225][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4012.606228][    C3]  </IRQ>
[ 4012.606229][    C3]  <TASK>
[ 4012.606231][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4012.606235][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4012.606238][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4012.606240][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4012.606243][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4012.606245][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4012.606246][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4012.606248][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4012.606250][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4012.606254][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4012.606259][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4012.606264][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4012.606268][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4012.606272][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4012.606275][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4012.606279][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4012.606282][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4012.606286][ C3] xas_alloc (lib/xarray.c:378) 
[ 4012.606291][ C3] xas_create (lib/xarray.c:685) 
[ 4012.606296][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4012.606301][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4012.606304][ C3] __xa_store (lib/xarray.c:1703) 
[ 4012.606308][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4012.606313][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4012.606315][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4012.606318][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4012.606323][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4012.606327][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4012.606330][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4012.606334][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4012.606337][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4012.606340][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4012.606344][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4012.606347][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4012.606352][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4012.606355][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4012.606360][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4012.606364][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4012.606368][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4012.606374][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4012.606378][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4012.606383][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4012.606388][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4012.606391][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4012.606395][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4012.606398][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4012.606401][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4012.606407][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4012.606411][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4012.606416][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4012.606419][    C3] RIP: 0033:0x7f439756d93b
[ 4012.606423][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4012.606425][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4012.606428][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4012.606430][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4012.606432][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4012.606433][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4012.606435][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4016.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4016.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4016.656129][ C0] softirqs last disabled at (0): 0x0 
| [ 4016.656138][    C0] Tainted: [L]=SOFTLOCKUP
[ 4016.656139][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4016.656141][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4016.656146][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4016.656149][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4016.656152][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4016.656154][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4016.656156][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4016.656158][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4016.656160][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4016.656162][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4016.656165][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4016.656168][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4016.656170][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4016.656171][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4016.656173][    C0] PKRU: 55555554
[ 4016.656174][    C0] Call Trace:
[ 4016.656175][    C0]  <TASK>
[ 4016.656178][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4016.656181][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4016.656185][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4016.656188][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4016.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4016.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4016.656199][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4016.656202][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4016.656208][ C0] xa_store (lib/xarray.c:1734) 
[ 4016.656211][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4016.656215][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4016.656220][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4016.656223][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4016.656226][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4016.656230][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4016.656233][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4016.656239][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4016.656243][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4016.656247][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4016.656251][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4016.656256][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4016.656262][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4016.656266][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4016.656270][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4016.656274][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4016.656277][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4016.656281][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4016.656284][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4016.656287][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4016.656293][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4016.656296][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4016.656301][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4016.656304][    C0] RIP: 0033:0x7f439756d93b
[ 4016.656307][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4016.656309][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4016.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4016.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4016.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4016.656318][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4016.656320][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4020.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4020.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4020.669127][ C2] softirqs last disabled at (0): 0x0 
| [ 4020.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 4020.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4020.669140][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 4020.669143][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 4020.669147][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000282
[ 4020.669150][    C2] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4020.669152][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4020.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4020.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4020.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4020.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4020.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4020.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4020.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4020.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4020.669171][    C2] PKRU: 55555554
[ 4020.669172][    C2] Call Trace:
[ 4020.669173][    C2]  <TASK>
[ 4020.669176][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4020.669181][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4020.669184][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4020.669188][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4020.669191][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4020.669196][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4020.669199][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4020.669201][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4020.669204][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4020.669210][ C2] xa_store (lib/xarray.c:1734) 
[ 4020.669213][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4020.669218][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4020.669222][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4020.669225][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4020.669228][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4020.669232][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4020.669236][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4020.669241][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4020.669245][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4020.669250][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4020.669254][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4020.669258][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4020.669264][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4020.669268][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4020.669272][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4020.669276][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4020.669280][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4020.669283][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4020.669286][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4020.669290][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4020.669295][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4020.669298][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4020.669303][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4020.669306][    C2] RIP: 0033:0x7f439756d93b
[ 4020.669309][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4020.669312][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4020.669315][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4020.669316][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4020.669319][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4020.669320][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4020.669322][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4036.669119][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4036.669124][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4036.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 4036.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 4036.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4036.669140][ C1] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4036.669145][ C1] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 4036.669148][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4036.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4036.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4036.669155][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4036.669157][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4036.669159][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4036.669161][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4036.669164][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4036.669167][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4036.669169][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4036.669171][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4036.669173][    C1] PKRU: 55555554
[ 4036.669174][    C1] Call Trace:
[ 4036.669176][    C1]  <TASK>
[ 4036.669178][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4036.669182][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4036.669185][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4036.669188][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4036.669193][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4036.669196][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4036.669199][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4036.669202][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4036.669207][ C1] xa_store (lib/xarray.c:1734) 
[ 4036.669211][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4036.669215][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4036.669220][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4036.669223][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4036.669225][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4036.669230][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4036.669233][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4036.669238][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4036.669242][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4036.669247][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4036.669251][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4036.669255][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4036.669261][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4036.669265][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4036.669269][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4036.669274][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4036.669277][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4036.669280][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4036.669283][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4036.669287][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4036.669292][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4036.669296][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4036.669300][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4036.669303][    C1] RIP: 0033:0x7f439756d93b
[ 4036.669306][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4036.669309][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4036.669312][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4036.669314][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4036.669316][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4036.669318][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4036.669320][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4036.670133][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4036.670141][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4036.670144][ C3] softirqs last disabled at (0): 0x0 
| [ 4036.670157][    C3] Tainted: [L]=SOFTLOCKUP
[ 4036.670158][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4036.670161][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4036.670169][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4036.670172][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4036.670175][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4036.670177][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4036.670179][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4036.670181][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4036.670183][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4036.670185][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4036.670187][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4036.670192][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4036.670194][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4036.670195][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4036.670197][    C3] PKRU: 55555554
[ 4036.670199][    C3] Call Trace:
[ 4036.670203][    C3]  <IRQ>
[ 4036.670205][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4036.670210][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4036.670215][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4036.670219][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4036.670223][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4036.670228][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4036.670231][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4036.670236][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4036.670239][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4036.670242][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4036.670245][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4036.670248][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4036.670250][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4036.670256][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4036.670261][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4036.670264][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4036.670268][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4036.670273][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4036.670277][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4036.670282][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4036.670287][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4036.670293][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4036.670299][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4036.670302][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4036.670305][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4036.670309][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4036.670312][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4036.670314][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4036.670320][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4036.670323][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4036.670326][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4036.670330][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4036.670335][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4036.670338][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4036.670341][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4036.670345][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4036.670348][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4036.670352][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4036.670357][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4036.670360][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4036.670365][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4036.670369][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4036.670372][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4036.670377][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4036.670382][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4036.670388][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4036.670391][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4036.670395][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4036.670399][    C3]  </IRQ>
[ 4036.670400][    C3]  <TASK>
[ 4036.670402][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4036.670407][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4036.670410][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4036.670413][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4036.670416][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4036.670418][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4036.670421][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4036.670422][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4036.670424][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4036.670429][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4036.670434][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4036.670440][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4036.670444][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4036.670448][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4036.670451][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4036.670456][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4036.670458][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4036.670463][ C3] xas_alloc (lib/xarray.c:378) 
[ 4036.670468][ C3] xas_create (lib/xarray.c:685) 
[ 4036.670474][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4036.670478][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4036.670482][ C3] __xa_store (lib/xarray.c:1703) 
[ 4036.670486][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4036.670490][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4036.670493][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4036.670496][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4036.670501][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4036.670504][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4036.670508][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4036.670513][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4036.670516][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4036.670518][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4036.670522][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4036.670526][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4036.670531][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4036.670535][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4036.670540][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4036.670544][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4036.670549][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4036.670557][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4036.670561][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4036.670566][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4036.670570][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4036.670574][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4036.670577][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4036.670580][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4036.670584][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4036.670590][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4036.670594][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4036.670600][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4036.670603][    C3] RIP: 0033:0x7f439756d93b
[ 4036.670607][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4036.670610][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4036.670613][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4036.670615][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4036.670617][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4036.670619][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4036.670621][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4044.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4044.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4044.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 4044.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 4044.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4044.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4044.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4044.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4044.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4044.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4044.656155][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4044.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4044.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4044.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4044.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4044.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4044.656168][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4044.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4044.656172][    C0] PKRU: 55555554
[ 4044.656173][    C0] Call Trace:
[ 4044.656175][    C0]  <TASK>
[ 4044.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4044.656181][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4044.656185][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4044.656188][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4044.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4044.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4044.656199][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4044.656202][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4044.656207][ C0] xa_store (lib/xarray.c:1734) 
[ 4044.656211][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4044.656215][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4044.656220][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4044.656223][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4044.656226][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4044.656230][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4044.656234][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4044.656239][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4044.656243][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4044.656248][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4044.656251][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4044.656256][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4044.656262][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4044.656266][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4044.656270][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4044.656274][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4044.656278][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4044.656282][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4044.656284][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4044.656288][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4044.656293][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4044.656297][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4044.656301][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4044.656304][    C0] RIP: 0033:0x7f439756d93b
[ 4044.656307][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4044.656310][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4044.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4044.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4044.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4044.656318][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4044.656320][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4048.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4048.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4048.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 4048.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 4048.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4048.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4048.669145][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4048.669148][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4048.669151][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4048.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4048.669155][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4048.669157][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4048.669159][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4048.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4048.669164][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4048.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4048.669169][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4048.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4048.669172][    C2] PKRU: 55555554
[ 4048.669174][    C2] Call Trace:
[ 4048.669176][    C2]  <TASK>
[ 4048.669178][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4048.669182][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4048.669185][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4048.669188][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4048.669193][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4048.669196][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4048.669199][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4048.669202][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4048.669208][ C2] xa_store (lib/xarray.c:1734) 
[ 4048.669212][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4048.669215][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4048.669220][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4048.669223][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4048.669226][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4048.669230][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4048.669234][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4048.669240][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4048.669244][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4048.669248][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4048.669252][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4048.669256][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4048.669262][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4048.669266][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4048.669270][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4048.669275][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4048.669278][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4048.669282][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4048.669285][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4048.669288][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4048.669293][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4048.669297][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4048.669302][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4048.669305][    C2] RIP: 0033:0x7f439756d93b
[ 4048.669307][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4048.669310][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4048.669313][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4048.669315][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4048.669317][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4048.669319][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4048.669321][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4064.669119][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4064.669124][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4064.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 4064.669136][    C1] Tainted: [L]=SOFTLOCKUP
[ 4064.669138][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4064.669140][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4064.669144][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4064.669147][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4064.669150][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4064.669152][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4064.669154][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4064.669156][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4064.669158][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4064.669160][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4064.669162][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4064.669165][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4064.669168][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4064.669169][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4064.669171][    C1] PKRU: 55555554
[ 4064.669172][    C1] Call Trace:
[ 4064.669174][    C1]  <TASK>
[ 4064.669176][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4064.669180][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4064.669184][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4064.669187][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4064.669193][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4064.669196][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4064.669199][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4064.669202][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4064.669207][ C1] xa_store (lib/xarray.c:1734) 
[ 4064.669211][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4064.669214][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4064.669220][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4064.669223][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4064.669225][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4064.669230][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4064.669234][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4064.669239][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4064.669243][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4064.669247][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4064.669251][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4064.669255][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4064.669262][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4064.669266][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4064.669270][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4064.669275][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4064.669278][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4064.669282][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4064.669284][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4064.669288][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4064.669293][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4064.669297][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4064.669301][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4064.669304][    C1] RIP: 0033:0x7f439756d93b
[ 4064.669307][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4064.669310][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4064.669312][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4064.669315][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4064.669316][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4064.669318][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4064.669320][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4064.670133][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4064.670141][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4064.670144][ C3] softirqs last disabled at (0): 0x0 
| [ 4064.670156][    C3] Tainted: [L]=SOFTLOCKUP
[ 4064.670157][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4064.670160][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4064.670168][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4064.670171][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4064.670173][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4064.670176][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4064.670178][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4064.670180][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4064.670181][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4064.670183][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4064.670186][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4064.670190][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4064.670192][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4064.670193][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4064.670195][    C3] PKRU: 55555554
[ 4064.670196][    C3] Call Trace:
[ 4064.670200][    C3]  <IRQ>
[ 4064.670202][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4064.670207][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4064.670213][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4064.670216][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4064.670220][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4064.670225][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4064.670228][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4064.670232][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4064.670235][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4064.670238][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4064.670241][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4064.670244][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4064.670247][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4064.670252][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4064.670257][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4064.670259][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4064.670263][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4064.670268][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4064.670272][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4064.670277][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4064.670282][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4064.670288][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4064.670294][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4064.670297][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4064.670300][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4064.670303][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4064.670307][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4064.670309][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4064.670315][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4064.670318][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4064.670321][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4064.670325][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4064.670330][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4064.670333][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4064.670336][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4064.670339][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4064.670343][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4064.670347][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4064.670352][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4064.670354][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4064.670360][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4064.670364][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4064.670367][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4064.670372][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4064.670376][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4064.670382][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4064.670385][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4064.670389][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4064.670392][    C3]  </IRQ>
[ 4064.670394][    C3]  <TASK>
[ 4064.670395][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4064.670400][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4064.670403][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4064.670406][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4064.670409][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4064.670411][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4064.670413][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4064.670415][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4064.670417][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4064.670421][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4064.670427][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4064.670432][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4064.670436][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4064.670441][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4064.670443][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4064.670448][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4064.670450][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4064.670455][ C3] xas_alloc (lib/xarray.c:378) 
[ 4064.670460][ C3] xas_create (lib/xarray.c:685) 
[ 4064.670466][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4064.670470][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4064.670474][ C3] __xa_store (lib/xarray.c:1703) 
[ 4064.670477][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4064.670482][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4064.670485][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4064.670488][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4064.670493][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4064.670497][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4064.670500][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4064.670505][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4064.670508][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4064.670511][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4064.670515][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4064.670518][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4064.670523][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4064.670527][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4064.670532][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4064.670536][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4064.670541][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4064.670549][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4064.670553][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4064.670558][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4064.670562][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4064.670565][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4064.670569][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4064.670572][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4064.670576][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4064.670582][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4064.670585][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4064.670590][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4064.670593][    C3] RIP: 0033:0x7f439756d93b
[ 4064.670597][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4064.670600][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4064.670603][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4064.670605][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4064.670607][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4064.670609][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4064.670611][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4072.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4072.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4072.656129][ C0] softirqs last disabled at (0): 0x0 
| [ 4072.656138][    C0] Tainted: [L]=SOFTLOCKUP
[ 4072.656139][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4072.656141][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4072.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4072.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4072.656151][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4072.656153][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4072.656155][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4072.656157][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4072.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4072.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4072.656164][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4072.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4072.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4072.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4072.656172][    C0] PKRU: 55555554
[ 4072.656173][    C0] Call Trace:
[ 4072.656175][    C0]  <TASK>
[ 4072.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4072.656180][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4072.656185][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4072.656188][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4072.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4072.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4072.656198][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4072.656201][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4072.656206][ C0] xa_store (lib/xarray.c:1734) 
[ 4072.656210][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4072.656214][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4072.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4072.656222][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4072.656224][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4072.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4072.656233][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4072.656238][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4072.656242][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4072.656247][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4072.656251][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4072.656255][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4072.656261][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4072.656265][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4072.656269][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4072.656273][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4072.656277][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4072.656281][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4072.656283][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4072.656287][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4072.656292][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4072.656296][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4072.656300][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4072.656303][    C0] RIP: 0033:0x7f439756d93b
[ 4072.656306][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4072.656309][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4072.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4072.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4072.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4072.656318][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4072.656320][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4076.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4076.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4076.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 4076.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 4076.669137][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4076.669139][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4076.669144][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4076.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4076.669149][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4076.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4076.669153][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4076.669155][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4076.669157][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4076.669159][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4076.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4076.669165][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4076.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4076.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4076.669170][    C2] PKRU: 55555554
[ 4076.669171][    C2] Call Trace:
[ 4076.669173][    C2]  <TASK>
[ 4076.669176][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4076.669179][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4076.669183][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4076.669186][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4076.669191][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4076.669194][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4076.669197][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4076.669199][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4076.669205][ C2] xa_store (lib/xarray.c:1734) 
[ 4076.669208][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4076.669212][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4076.669217][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4076.669219][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4076.669222][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4076.669227][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4076.669230][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4076.669235][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4076.669240][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4076.669244][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4076.669248][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4076.669252][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4076.669258][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4076.669262][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4076.669266][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4076.669271][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4076.669274][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4076.669278][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4076.669281][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4076.669284][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4076.669289][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4076.669293][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4076.669297][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4076.669300][    C2] RIP: 0033:0x7f439756d93b
[ 4076.669302][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4076.669305][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4076.669308][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4076.669310][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4076.669312][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4076.669314][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4076.669316][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4090.618705][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 4090.618981][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 4090.619216][    C1] NMI backtrace for cpu 1
| [ 4090.619226][    C1] Tainted: [L]=SOFTLOCKUP
[ 4090.619227][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4090.619229][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4090.619235][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4090.619238][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4090.619241][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4090.619243][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4090.619245][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4090.619247][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4090.619249][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4090.619251][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4090.619253][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4090.619257][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4090.619258][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4090.619260][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4090.619262][    C1] PKRU: 55555554
[ 4090.619263][    C1] Call Trace:
[ 4090.619264][    C1]  <TASK>
[ 4090.619266][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4090.619270][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4090.619274][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4090.619277][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4090.619282][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4090.619285][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4090.619288][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4090.619291][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4090.619296][ C1] xa_store (lib/xarray.c:1734) 
[ 4090.619300][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4090.619303][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4090.619308][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4090.619310][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4090.619313][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4090.619317][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4090.619320][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4090.619325][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4090.619329][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4090.619333][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4090.619337][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4090.619341][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4090.619348][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4090.619351][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4090.619356][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4090.619360][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4090.619364][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4090.619367][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4090.619370][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4090.619374][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4090.619379][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4090.619383][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4090.619387][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4090.619390][    C1] RIP: 0033:0x7f439756d93b
[ 4090.619392][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4090.619395][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4090.619397][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4090.619399][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4090.619401][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4090.619403][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4090.619404][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4090.619403][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 4090.619404][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4090.619410][    C1]  </TASK>
| [ 4090.620224][    C3] Tainted: [L]=SOFTLOCKUP
[ 4090.620226][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4090.620227][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4090.620232][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4090.620236][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4090.620239][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4090.620242][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4090.620244][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4090.620246][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4090.620248][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4090.620250][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4090.620253][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4090.620257][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4090.620259][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4090.620261][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4090.620262][    C3] PKRU: 55555554
[ 4090.620264][    C3] Call Trace:
[ 4090.620265][    C3]  <IRQ>
[ 4090.620266][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4090.620271][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4090.620275][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4090.620278][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4090.620282][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4090.620286][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4090.620290][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4090.620293][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4090.620296][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4090.620299][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4090.620302][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4090.620304][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4090.620307][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4090.620313][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4090.620316][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4090.620319][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4090.620323][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4090.620328][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4090.620332][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4090.620337][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4090.620341][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4090.620347][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4090.620352][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4090.620355][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4090.620358][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4090.620361][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4090.620364][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4090.620367][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4090.620373][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4090.620375][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4090.620379][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4090.620383][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4090.620387][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4090.620390][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4090.620393][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4090.620397][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4090.620401][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4090.620405][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4090.620410][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4090.620413][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4090.620418][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4090.620421][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4090.620424][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4090.620429][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4090.620433][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4090.620438][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4090.620442][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4090.620445][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4090.620448][    C3]  </IRQ>
[ 4090.620449][    C3]  <TASK>
[ 4090.620451][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4090.620455][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4090.620458][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4090.620461][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4090.620463][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4090.620465][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4090.620467][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4090.620469][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4090.620471][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4090.620476][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4090.620481][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4090.620486][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4090.620490][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4090.620494][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4090.620497][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4090.620501][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4090.620504][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4090.620509][ C3] xas_alloc (lib/xarray.c:378) 
[ 4090.620513][ C3] xas_create (lib/xarray.c:685) 
[ 4090.620519][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4090.620523][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4090.620527][ C3] __xa_store (lib/xarray.c:1703) 
[ 4090.620531][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4090.620536][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4090.620539][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4090.620542][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4090.620547][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4090.620551][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4090.620554][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4090.620559][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4090.620562][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4090.620564][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4090.620569][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4090.620572][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4090.620577][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4090.620581][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4090.620585][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4090.620589][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4090.620593][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4090.620600][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4090.620604][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4090.620610][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4090.620615][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4090.620618][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4090.620622][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4090.620624][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4090.620628][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4090.620634][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4090.620637][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4090.620642][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4090.620645][    C3] RIP: 0033:0x7f439756d93b
[ 4090.620650][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4090.620652][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4090.620655][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4090.620657][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4090.620658][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4090.620660][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4090.620661][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4100.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4100.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4100.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 4100.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 4100.656139][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4100.656140][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 4100.656144][ C0] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 4100.656147][    C0] RSP: 0018:ffffc900034c79f8 EFLAGS: 00000282
[ 4100.656150][    C0] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4100.656152][    C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4100.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4100.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4100.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4100.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4100.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4100.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4100.656168][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4100.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4100.656172][    C0] PKRU: 55555554
[ 4100.656173][    C0] Call Trace:
[ 4100.656175][    C0]  <TASK>
[ 4100.656177][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4100.656182][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4100.656185][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4100.656189][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4100.656192][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4100.656198][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4100.656201][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4100.656204][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4100.656207][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4100.656212][ C0] xa_store (lib/xarray.c:1734) 
[ 4100.656216][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4100.656219][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4100.656224][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4100.656227][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4100.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4100.656234][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4100.656237][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4100.656242][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4100.656247][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4100.656251][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4100.656255][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4100.656259][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4100.656266][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4100.656269][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4100.656273][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4100.656278][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4100.656281][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4100.656285][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4100.656288][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4100.656291][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4100.656296][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4100.656300][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4100.656304][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4100.656307][    C0] RIP: 0033:0x7f439756d93b
[ 4100.656310][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4100.656313][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4100.656316][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4100.656318][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4100.656320][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4100.656322][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4100.656324][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4104.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4104.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4104.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 4104.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 4104.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4104.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4104.669145][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4104.669148][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4104.669151][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4104.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4104.669155][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4104.669157][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4104.669159][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4104.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4104.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4104.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4104.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4104.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4104.669172][    C2] PKRU: 55555554
[ 4104.669173][    C2] Call Trace:
[ 4104.669175][    C2]  <TASK>
[ 4104.669177][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4104.669181][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4104.669185][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4104.669188][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4104.669193][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4104.669196][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4104.669199][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4104.669202][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4104.669207][ C2] xa_store (lib/xarray.c:1734) 
[ 4104.669211][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4104.669214][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4104.669219][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4104.669222][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4104.669225][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4104.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4104.669233][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4104.669238][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4104.669242][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4104.669247][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4104.669251][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4104.669256][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4104.669262][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4104.669265][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4104.669270][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4104.669274][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4104.669277][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4104.669281][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4104.669284][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4104.669287][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4104.669293][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4104.669297][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4104.669301][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4104.669304][    C2] RIP: 0033:0x7f439756d93b
[ 4104.669307][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4104.669309][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4104.669312][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4104.669314][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4104.669316][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4104.669318][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4104.669320][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4116.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4116.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4116.669129][ C1] softirqs last disabled at (0): 0x0 
| [ 4116.669138][    C1] Tainted: [L]=SOFTLOCKUP
[ 4116.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4116.669141][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4116.669146][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4116.669149][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4116.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4116.669154][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4116.669156][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4116.669158][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4116.669160][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4116.669162][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4116.669164][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4116.669167][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4116.669169][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4116.669171][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4116.669173][    C1] PKRU: 55555554
[ 4116.669175][    C1] Call Trace:
[ 4116.669177][    C1]  <TASK>
[ 4116.669179][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4116.669183][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4116.669187][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4116.669190][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4116.669196][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4116.669199][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4116.669202][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4116.669205][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4116.669210][ C1] xa_store (lib/xarray.c:1734) 
[ 4116.669214][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4116.669218][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4116.669222][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4116.669225][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4116.669228][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4116.669233][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4116.669236][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4116.669241][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4116.669245][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4116.669249][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4116.669254][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4116.669258][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4116.669264][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4116.669268][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4116.669272][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4116.669276][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4116.669280][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4116.669284][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4116.669286][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4116.669290][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4116.669295][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4116.669299][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4116.669303][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4116.669306][    C1] RIP: 0033:0x7f439756d93b
[ 4116.669309][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4116.669312][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4116.669315][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4116.669317][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4116.669319][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4116.669321][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4116.669323][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4116.670134][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4116.670142][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4116.670145][ C3] softirqs last disabled at (0): 0x0 
| [ 4116.670156][    C3] Tainted: [L]=SOFTLOCKUP
[ 4116.670158][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4116.670160][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4116.670168][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4116.670171][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4116.670174][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4116.670176][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4116.670178][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4116.670180][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4116.670182][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4116.670184][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4116.670186][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4116.670190][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4116.670192][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4116.670194][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4116.670196][    C3] PKRU: 55555554
[ 4116.670197][    C3] Call Trace:
[ 4116.670200][    C3]  <IRQ>
[ 4116.670202][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4116.670208][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4116.670213][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4116.670216][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4116.670221][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4116.670225][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4116.670229][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4116.670232][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4116.670236][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4116.670239][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4116.670242][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4116.670244][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4116.670247][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4116.670253][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4116.670258][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4116.670261][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4116.670264][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4116.670269][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4116.670274][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4116.670279][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4116.670283][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4116.670290][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4116.670295][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4116.670298][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4116.670301][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4116.670305][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4116.670309][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4116.670311][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4116.670318][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4116.670321][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4116.670324][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4116.670328][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4116.670332][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4116.670335][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4116.670338][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4116.670341][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4116.670345][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4116.670349][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4116.670353][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4116.670356][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4116.670362][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4116.670366][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4116.670369][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4116.670374][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4116.670378][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4116.670384][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4116.670387][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4116.670391][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4116.670395][    C3]  </IRQ>
[ 4116.670396][    C3]  <TASK>
[ 4116.670397][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4116.670402][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4116.670406][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4116.670408][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4116.670411][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4116.670413][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4116.670415][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4116.670417][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4116.670419][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4116.670423][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4116.670428][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4116.670434][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4116.670438][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4116.670442][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4116.670445][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4116.670449][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4116.670452][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4116.670457][ C3] xas_alloc (lib/xarray.c:378) 
[ 4116.670462][ C3] xas_create (lib/xarray.c:685) 
[ 4116.670468][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4116.670472][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4116.670476][ C3] __xa_store (lib/xarray.c:1703) 
[ 4116.670480][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4116.670485][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4116.670488][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4116.670491][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4116.670496][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4116.670500][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4116.670503][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4116.670508][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4116.670511][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4116.670514][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4116.670518][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4116.670521][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4116.670526][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4116.670530][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4116.670535][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4116.670539][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4116.670543][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4116.670551][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4116.670555][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4116.670561][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4116.670565][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4116.670568][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4116.670572][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4116.670575][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4116.670578][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4116.670584][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4116.670588][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4116.670593][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4116.670596][    C3] RIP: 0033:0x7f439756d93b
[ 4116.670599][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4116.670602][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4116.670605][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4116.670607][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4116.670609][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4116.670612][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4116.670613][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4128.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4128.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4128.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 4128.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 4128.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4128.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4128.656144][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4128.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4128.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4128.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4128.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4128.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4128.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4128.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4128.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4128.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4128.656168][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4128.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4128.656171][    C0] PKRU: 55555554
[ 4128.656172][    C0] Call Trace:
[ 4128.656173][    C0]  <TASK>
[ 4128.656176][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4128.656179][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4128.656183][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4128.656186][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4128.656191][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4128.656194][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4128.656197][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4128.656200][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4128.656205][ C0] xa_store (lib/xarray.c:1734) 
[ 4128.656209][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4128.656212][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4128.656217][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4128.656220][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4128.656223][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4128.656228][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4128.656231][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4128.656236][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4128.656240][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4128.656245][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4128.656249][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4128.656253][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4128.656260][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4128.656263][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4128.656268][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4128.656272][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4128.656275][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4128.656279][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4128.656282][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4128.656285][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4128.656290][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4128.656294][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4128.656299][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4128.656302][    C0] RIP: 0033:0x7f439756d93b
[ 4128.656305][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4128.656308][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4128.656310][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4128.656312][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4128.656314][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4128.656316][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4128.656318][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4132.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4132.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4132.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 4132.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 4132.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4132.669139][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4132.669144][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4132.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4132.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4132.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4132.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4132.669155][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4132.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4132.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4132.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4132.669165][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4132.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4132.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4132.669170][    C2] PKRU: 55555554
[ 4132.669172][    C2] Call Trace:
[ 4132.669173][    C2]  <TASK>
[ 4132.669176][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4132.669180][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4132.669184][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4132.669187][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4132.669192][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4132.669195][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4132.669198][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4132.669201][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4132.669206][ C2] xa_store (lib/xarray.c:1734) 
[ 4132.669210][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4132.669213][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4132.669218][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4132.669221][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4132.669224][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4132.669228][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4132.669232][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4132.669237][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4132.669241][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4132.669246][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4132.669250][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4132.669254][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4132.669260][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4132.669264][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4132.669268][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4132.669272][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4132.669276][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4132.669279][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4132.669282][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4132.669286][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4132.669291][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4132.669295][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4132.669299][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4132.669302][    C2] RIP: 0033:0x7f439756d93b
[ 4132.669305][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4132.669307][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4132.669310][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4132.669312][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4132.669314][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4132.669316][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4132.669318][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4144.669119][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4144.669124][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4144.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 4144.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 4144.669138][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4144.669140][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:104 kernel/locking/qspinlock.c:141) 
[ 4144.669144][ C1] Code: c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44 24 40 <85> c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00 00 e8 60 b8 c7 fd be
All code
========
   0:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   4:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
   a:	48 89 ef             	mov    %rbp,%rdi
   d:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86f
  12:	41 0f b6 06          	movzbl (%r14),%eax
  16:	41 38 c5             	cmp    %al,%r13b
  19:	7c 08                	jl     0x23
  1b:	84 c0                	test   %al,%al
  1d:	0f 85 8d 07 00 00    	jne    0x7b0
  23:	8b 45 00             	mov    0x0(%rbp),%eax
  26:	89 44 24 40          	mov    %eax,0x40(%rsp)
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 6e 01 00 00    	jne    0x1a0
  32:	48 89 ef             	mov    %rbp,%rdi
  35:	be 04 00 00 00       	mov    $0x4,%esi
  3a:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b89f
  3f:	be                   	.byte 0xbe

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 6e 01 00 00    	jne    0x176
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	be 04 00 00 00       	mov    $0x4,%esi
  10:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b875
  15:	be                   	.byte 0xbe
[ 4144.669147][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000246
[ 4144.669150][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4144.669152][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4144.669154][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4144.669156][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4144.669158][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4144.669160][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4144.669162][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4144.669166][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4144.669168][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4144.669169][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4144.669171][    C1] PKRU: 55555554
[ 4144.669173][    C1] Call Trace:
[ 4144.669174][    C1]  <TASK>
[ 4144.669177][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4144.669180][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4144.669184][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4144.669187][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4144.669192][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4144.669195][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4144.669198][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4144.669201][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4144.669206][ C1] xa_store (lib/xarray.c:1734) 
[ 4144.669210][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4144.669214][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4144.669218][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4144.669221][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4144.669224][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4144.669229][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4144.669232][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4144.669238][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4144.669241][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4144.669246][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4144.669250][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4144.669255][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4144.669261][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4144.669265][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4144.669269][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4144.669273][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4144.669277][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4144.669280][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4144.669283][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4144.669287][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4144.669292][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4144.669296][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4144.669300][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4144.669303][    C1] RIP: 0033:0x7f439756d93b
[ 4144.669306][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4144.669309][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4144.669312][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4144.669314][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4144.669316][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4144.669318][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4144.669319][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4144.670134][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4144.670142][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4144.670145][ C3] softirqs last disabled at (0): 0x0 
| [ 4144.670157][    C3] Tainted: [L]=SOFTLOCKUP
[ 4144.670159][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4144.670161][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4144.670169][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4144.670172][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4144.670175][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4144.670177][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4144.670179][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4144.670181][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4144.670183][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4144.670184][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4144.670187][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4144.670191][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4144.670193][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4144.670194][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4144.670196][    C3] PKRU: 55555554
[ 4144.670197][    C3] Call Trace:
[ 4144.670201][    C3]  <IRQ>
[ 4144.670203][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4144.670209][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4144.670214][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4144.670217][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4144.670222][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4144.670226][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4144.670229][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4144.670233][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4144.670236][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4144.670240][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4144.670242][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4144.670245][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4144.670248][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4144.670254][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4144.670259][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4144.670262][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4144.670266][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4144.670272][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4144.670276][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4144.670281][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4144.670285][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4144.670292][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4144.670297][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4144.670300][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4144.670303][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4144.670306][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4144.670310][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4144.670313][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4144.670318][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4144.670321][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4144.670324][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4144.670329][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4144.670333][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4144.670336][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4144.670339][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4144.670343][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4144.670346][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4144.670350][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4144.670355][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4144.670358][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4144.670363][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4144.670367][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4144.670370][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4144.670375][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4144.670380][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4144.670386][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4144.670389][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4144.670393][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4144.670397][    C3]  </IRQ>
[ 4144.670398][    C3]  <TASK>
[ 4144.670399][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4144.670405][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4144.670408][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4144.670411][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4144.670414][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4144.670416][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4144.670418][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4144.670420][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4144.670421][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4144.670425][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4144.670431][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4144.670437][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4144.670441][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4144.670446][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4144.670449][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4144.670453][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4144.670456][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4144.670461][ C3] xas_alloc (lib/xarray.c:378) 
[ 4144.670465][ C3] xas_create (lib/xarray.c:685) 
[ 4144.670471][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4144.670476][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4144.670479][ C3] __xa_store (lib/xarray.c:1703) 
[ 4144.670483][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4144.670488][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4144.670490][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4144.670493][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4144.670498][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4144.670502][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4144.670505][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4144.670510][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4144.670513][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4144.670516][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4144.670520][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4144.670523][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4144.670528][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4144.670532][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4144.670536][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4144.670540][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4144.670545][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4144.670552][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4144.670556][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4144.670561][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4144.670565][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4144.670569][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4144.670573][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4144.670575][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4144.670579][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4144.670585][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4144.670589][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4144.670594][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4144.670597][    C3] RIP: 0033:0x7f439756d93b
[ 4144.670602][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4144.670605][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4144.670608][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4144.670610][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4144.670612][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4144.670614][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4144.670616][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4156.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4156.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4156.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 4156.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 4156.656139][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4156.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4156.656144][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4156.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4156.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4156.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4156.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4156.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4156.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4156.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4156.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4156.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4156.656168][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4156.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4156.656171][    C0] PKRU: 55555554
[ 4156.656173][    C0] Call Trace:
[ 4156.656174][    C0]  <TASK>
[ 4156.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4156.656180][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4156.656184][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4156.656187][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4156.656192][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4156.656195][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4156.656197][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4156.656200][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4156.656205][ C0] xa_store (lib/xarray.c:1734) 
[ 4156.656209][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4156.656213][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4156.656218][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4156.656221][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4156.656224][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4156.656228][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4156.656232][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4156.656238][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4156.656241][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4156.656246][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4156.656250][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4156.656254][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4156.656261][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4156.656265][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4156.656269][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4156.656273][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4156.656277][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4156.656281][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4156.656284][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4156.656287][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4156.656292][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4156.656296][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4156.656300][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4156.656304][    C0] RIP: 0033:0x7f439756d93b
[ 4156.656306][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4156.656309][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4156.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4156.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4156.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4156.656317][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4156.656319][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4160.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4160.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4160.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 4160.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 4160.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4160.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4160.669144][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 4160.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4160.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4160.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4160.669153][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4160.669155][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4160.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4160.669159][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4160.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4160.669165][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4160.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4160.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4160.669171][    C2] PKRU: 55555554
[ 4160.669172][    C2] Call Trace:
[ 4160.669174][    C2]  <TASK>
[ 4160.669176][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4160.669180][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4160.669184][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4160.669187][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4160.669192][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4160.669195][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4160.669198][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4160.669201][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4160.669206][ C2] xa_store (lib/xarray.c:1734) 
[ 4160.669210][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4160.669214][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4160.669218][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4160.669221][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4160.669224][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4160.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4160.669232][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4160.669237][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4160.669241][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4160.669246][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4160.669250][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4160.669254][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4160.669260][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4160.669264][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4160.669268][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4160.669272][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4160.669276][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4160.669279][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4160.669282][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4160.669286][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4160.669291][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4160.669295][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4160.669299][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4160.669302][    C2] RIP: 0033:0x7f439756d93b
[ 4160.669305][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4160.669307][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4160.669310][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4160.669312][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4160.669314][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4160.669316][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4160.669318][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4168.632464][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 4168.632744][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 4168.632985][    C1] NMI backtrace for cpu 1
| [ 4168.632995][    C1] Tainted: [L]=SOFTLOCKUP
[ 4168.632997][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4168.632999][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4168.633004][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4168.633008][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4168.633010][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4168.633013][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4168.633015][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4168.633017][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4168.633019][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4168.633020][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4168.633023][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4168.633026][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4168.633028][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4168.633029][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4168.633031][    C1] PKRU: 55555554
[ 4168.633032][    C1] Call Trace:
[ 4168.633033][    C1]  <TASK>
[ 4168.633036][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4168.633039][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4168.633043][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4168.633046][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4168.633051][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4168.633053][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4168.633056][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4168.633059][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4168.633064][ C1] xa_store (lib/xarray.c:1734) 
[ 4168.633068][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4168.633071][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4168.633075][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4168.633078][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4168.633081][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4168.633085][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4168.633089][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4168.633094][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4168.633097][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4168.633102][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4168.633106][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4168.633110][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4168.633116][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4168.633120][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4168.633124][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4168.633129][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4168.633132][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4168.633136][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4168.633139][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4168.633142][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4168.633147][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4168.633151][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4168.633155][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4168.633159][    C1] RIP: 0033:0x7f439756d93b
[ 4168.633161][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4168.633164][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4168.633167][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4168.633169][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4168.633171][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4168.633173][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4168.633174][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4168.633173][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 4168.633174][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4168.633180][    C1]  </TASK>
| [ 4168.633994][    C3] Tainted: [L]=SOFTLOCKUP
[ 4168.633995][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4168.633997][ C3] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 4168.634004][ C3] Code: 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 7b 44 8d ff       	jmp    0xffffffffff8d4482
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 4168.634008][    C3] RSP: 0018:ffffc90000270a40 EFLAGS: 00000202
[ 4168.634011][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4168.634014][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4168.634016][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4168.634018][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4168.634020][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4168.634022][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4168.634025][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4168.634029][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4168.634031][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4168.634033][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4168.634034][    C3] PKRU: 55555554
[ 4168.634036][    C3] Call Trace:
[ 4168.634037][    C3]  <IRQ>
[ 4168.634038][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4168.634042][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4168.634046][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4168.634050][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4168.634054][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4168.634057][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4168.634062][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4168.634065][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4168.634069][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4168.634071][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4168.634075][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4168.634077][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4168.634080][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4168.634083][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4168.634088][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4168.634092][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4168.634095][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4168.634098][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4168.634103][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4168.634107][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4168.634113][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4168.634116][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4168.634123][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4168.634129][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4168.634132][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4168.634135][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4168.634138][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4168.634142][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4168.634144][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4168.634150][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4168.634153][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4168.634156][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4168.634161][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4168.634164][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4168.634168][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4168.634171][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4168.634175][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4168.634178][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4168.634182][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4168.634186][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4168.634189][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4168.634194][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4168.634198][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4168.634201][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4168.634206][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4168.634209][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4168.634215][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4168.634218][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4168.634222][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4168.634225][    C3]  </IRQ>
[ 4168.634226][    C3]  <TASK>
[ 4168.634227][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4168.634231][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4168.634235][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4168.634237][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4168.634239][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4168.634241][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4168.634243][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4168.634245][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4168.634247][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4168.634251][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4168.634256][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4168.634262][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4168.634265][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4168.634269][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4168.634272][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4168.634277][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4168.634279][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4168.634284][ C3] xas_alloc (lib/xarray.c:378) 
[ 4168.634288][ C3] xas_create (lib/xarray.c:685) 
[ 4168.634294][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4168.634298][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4168.634302][ C3] __xa_store (lib/xarray.c:1703) 
[ 4168.634306][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4168.634310][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4168.634313][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4168.634316][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4168.634321][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4168.634324][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4168.634327][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4168.634332][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4168.634335][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4168.634337][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4168.634341][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4168.634345][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4168.634349][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4168.634353][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4168.634357][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4168.634361][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4168.634365][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4168.634371][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4168.634375][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4168.634380][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4168.634385][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4168.634388][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4168.634392][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4168.634394][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4168.634398][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4168.634404][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4168.634407][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4168.634412][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4168.634415][    C3] RIP: 0033:0x7f439756d93b
[ 4168.634419][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4168.634422][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4168.634424][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4168.634426][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4168.634428][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4168.634429][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4168.634431][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4184.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4184.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4184.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 4184.656136][    C0] Tainted: [L]=SOFTLOCKUP
[ 4184.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4184.656139][ C0] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 4184.656143][ C0] Code: ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 <49> 01 c1 48 89 e8 49 8d 59 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	7f ff                	jg     0x3
   4:	ff 48 39             	decl   0x39(%rax)
   7:	c7                   	(bad)
   8:	76 dd                	jbe    0xffffffffffffffe7
   a:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   f:	48 89 fd             	mov    %rdi,%rbp
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df 
  1c:	4d 89 d1             	mov    %r10,%r9
  1f:	48 c1 ed 03          	shr    $0x3,%rbp
  23:	49 c1 e9 03          	shr    $0x3,%r9
  27:	48 01 c5             	add    %rax,%rbp
  2a:*	49 01 c1             	add    %rax,%r9		<-- trapping instruction
  2d:	48 89 e8             	mov    %rbp,%rax
  30:	49 8d 59 01          	lea    0x1(%r9),%rbx
  34:	48 89 da             	mov    %rbx,%rdx
  37:	48 29 ea             	sub    %rbp,%rdx
  3a:	48 83 fa 10          	cmp    $0x10,%rdx
  3e:	0f                   	.byte 0xf
  3f:	8e                   	.byte 0x8e

Code starting with the faulting instruction
===========================================
   0:	49 01 c1             	add    %rax,%r9
   3:	48 89 e8             	mov    %rbp,%rax
   6:	49 8d 59 01          	lea    0x1(%r9),%rbx
   a:	48 89 da             	mov    %rbx,%rdx
   d:	48 29 ea             	sub    %rbp,%rdx
  10:	48 83 fa 10          	cmp    $0x10,%rdx
  14:	0f                   	.byte 0xf
  15:	8e                   	.byte 0x8e
[ 4184.656146][    C0] RSP: 0018:ffffc900034c79f8 EFLAGS: 00000282
[ 4184.656149][    C0] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4184.656151][    C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4184.656153][    C0] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: 1ffffffff77dcb80
[ 4184.656155][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4184.656157][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4184.656159][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4184.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4184.656165][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4184.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4184.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4184.656171][    C0] PKRU: 55555554
[ 4184.656172][    C0] Call Trace:
[ 4184.656173][    C0]  <TASK>
[ 4184.656175][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4184.656180][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4184.656184][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4184.656188][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4184.656191][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4184.656196][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4184.656199][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4184.656201][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4184.656204][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4184.656209][ C0] xa_store (lib/xarray.c:1734) 
[ 4184.656213][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4184.656217][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4184.656222][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4184.656225][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4184.656227][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4184.656232][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4184.656235][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4184.656241][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4184.656245][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4184.656249][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4184.656253][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4184.656258][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4184.656264][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4184.656268][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4184.656272][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4184.656277][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4184.656280][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4184.656284][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4184.656286][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4184.656290][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4184.656295][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4184.656298][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4184.656302][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4184.656306][    C0] RIP: 0033:0x7f439756d93b
[ 4184.656308][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4184.656311][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4184.656313][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4184.656315][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4184.656317][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4184.656319][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4184.656321][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4188.669118][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4188.669123][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4188.669127][ C2] softirqs last disabled at (0): 0x0 
| [ 4188.669135][    C2] Tainted: [L]=SOFTLOCKUP
[ 4188.669137][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4188.669139][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4188.669144][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4188.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4188.669149][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4188.669151][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4188.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4188.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4188.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4188.669159][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4188.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4188.669165][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4188.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4188.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4188.669171][    C2] PKRU: 55555554
[ 4188.669172][    C2] Call Trace:
[ 4188.669174][    C2]  <TASK>
[ 4188.669177][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4188.669181][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4188.669185][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4188.669188][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4188.669193][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4188.669196][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4188.669199][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4188.669202][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4188.669208][ C2] xa_store (lib/xarray.c:1734) 
[ 4188.669212][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4188.669215][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4188.669220][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4188.669223][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4188.669226][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4188.669230][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4188.669234][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4188.669239][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4188.669243][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4188.669248][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4188.669252][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4188.669256][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4188.669262][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4188.669266][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4188.669270][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4188.669275][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4188.669278][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4188.669282][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4188.669285][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4188.669288][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4188.669294][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4188.669297][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4188.669302][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4188.669305][    C2] RIP: 0033:0x7f439756d93b
[ 4188.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4188.669310][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4188.669313][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4188.669315][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4188.669317][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4188.669319][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4188.669321][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4192.669119][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4192.669124][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4192.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 4192.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 4192.669138][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4192.669140][ C1] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 4192.669145][ C1] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 4192.669148][    C1] RSP: 0018:ffffc900034b7a10 EFLAGS: 00000202
[ 4192.669150][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4192.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4192.669155][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4192.669157][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4192.669159][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4192.669161][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4192.669164][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4192.669167][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4192.669169][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4192.669171][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4192.669173][    C1] PKRU: 55555554
[ 4192.669174][    C1] Call Trace:
[ 4192.669175][    C1]  <TASK>
[ 4192.669177][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4192.669182][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4192.669185][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4192.669189][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4192.669192][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4192.669197][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4192.669200][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4192.669202][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4192.669205][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4192.669210][ C1] xa_store (lib/xarray.c:1734) 
[ 4192.669214][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4192.669217][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4192.669222][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4192.669225][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4192.669228][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4192.669232][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4192.669236][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4192.669241][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4192.669245][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4192.669249][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4192.669254][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4192.669258][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4192.669264][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4192.669268][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4192.669272][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4192.669276][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4192.669280][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4192.669284][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4192.669286][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4192.669290][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4192.669295][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4192.669299][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4192.669303][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4192.669306][    C1] RIP: 0033:0x7f439756d93b
[ 4192.669309][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4192.669312][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4192.669315][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4192.669317][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4192.669319][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4192.669321][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4192.669323][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4192.670133][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4192.670142][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4192.670146][ C3] softirqs last disabled at (0): 0x0 
| [ 4192.670157][    C3] Tainted: [L]=SOFTLOCKUP
[ 4192.670158][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4192.670161][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4192.670168][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4192.670172][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4192.670175][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4192.670177][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4192.670179][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4192.670181][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4192.670183][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4192.670185][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4192.670188][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4192.670192][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4192.670194][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4192.670195][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4192.670197][    C3] PKRU: 55555554
[ 4192.670198][    C3] Call Trace:
[ 4192.670201][    C3]  <IRQ>
[ 4192.670203][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4192.670208][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4192.670213][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4192.670217][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4192.670221][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4192.670226][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4192.670229][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4192.670233][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4192.670236][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4192.670240][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4192.670242][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4192.670245][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4192.670248][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4192.670254][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4192.670258][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4192.670261][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4192.670264][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4192.670269][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4192.670273][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4192.670279][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4192.670283][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4192.670290][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4192.670296][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4192.670299][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4192.670302][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4192.670305][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4192.670308][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4192.670311][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4192.670317][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4192.670320][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4192.670323][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4192.670327][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4192.670331][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4192.670335][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4192.670338][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4192.670342][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4192.670345][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4192.670349][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4192.670353][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4192.670356][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4192.670361][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4192.670365][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4192.670369][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4192.670373][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4192.670378][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4192.670384][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4192.670387][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4192.670391][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4192.670395][    C3]  </IRQ>
[ 4192.670396][    C3]  <TASK>
[ 4192.670397][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4192.670402][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4192.670406][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4192.670408][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4192.670411][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4192.670413][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4192.670415][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4192.670417][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4192.670419][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4192.670423][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4192.670428][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4192.670434][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4192.670437][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4192.670441][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4192.670444][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4192.670448][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4192.670451][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4192.670456][ C3] xas_alloc (lib/xarray.c:378) 
[ 4192.670460][ C3] xas_create (lib/xarray.c:685) 
[ 4192.670466][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4192.670471][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4192.670475][ C3] __xa_store (lib/xarray.c:1703) 
[ 4192.670479][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4192.670483][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4192.670486][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4192.670489][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4192.670494][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4192.670498][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4192.670501][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4192.670506][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4192.670509][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4192.670511][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4192.670516][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4192.670519][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4192.670523][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4192.670527][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4192.670532][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4192.670535][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4192.670540][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4192.670547][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4192.670551][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4192.670556][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4192.670560][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4192.670564][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4192.670568][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4192.670570][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4192.670573][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4192.670580][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4192.670584][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4192.670588][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4192.670592][    C3] RIP: 0033:0x7f439756d93b
[ 4192.670595][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4192.670599][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4192.670602][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4192.670604][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4192.670606][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4192.670608][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4192.670610][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4212.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4212.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4212.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 4212.656136][    C0] Tainted: [L]=SOFTLOCKUP
[ 4212.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4212.656139][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4212.656144][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4212.656147][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4212.656149][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4212.656151][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4212.656153][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4212.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4212.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4212.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4212.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4212.656165][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4212.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4212.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4212.656170][    C0] PKRU: 55555554
[ 4212.656172][    C0] Call Trace:
[ 4212.656174][    C0]  <TASK>
[ 4212.656176][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4212.656180][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4212.656184][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4212.656187][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4212.656192][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4212.656195][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4212.656198][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4212.656201][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4212.656206][ C0] xa_store (lib/xarray.c:1734) 
[ 4212.656210][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4212.656214][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4212.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4212.656222][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4212.656225][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4212.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4212.656233][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4212.656238][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4212.656242][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4212.656247][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4212.656251][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4212.656255][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4212.656262][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4212.656265][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4212.656270][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4212.656274][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4212.656277][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4212.656281][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4212.656284][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4212.656287][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4212.656292][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4212.656296][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4212.656300][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4212.656304][    C0] RIP: 0033:0x7f439756d93b
[ 4212.656306][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4212.656309][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4212.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4212.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4212.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4212.656318][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4212.656319][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4216.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4216.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4216.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 4216.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 4216.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4216.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4216.669144][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4216.669148][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4216.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4216.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4216.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4216.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4216.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4216.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4216.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4216.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4216.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4216.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4216.669172][    C2] PKRU: 55555554
[ 4216.669173][    C2] Call Trace:
[ 4216.669175][    C2]  <TASK>
[ 4216.669177][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4216.669181][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4216.669185][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4216.669188][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4216.669193][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4216.669196][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4216.669198][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4216.669202][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4216.669207][ C2] xa_store (lib/xarray.c:1734) 
[ 4216.669211][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4216.669215][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4216.669219][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4216.669222][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4216.669225][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4216.669230][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4216.669233][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4216.669239][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4216.669242][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4216.669247][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4216.669251][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4216.669255][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4216.669261][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4216.669265][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4216.669269][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4216.669273][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4216.669277][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4216.669280][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4216.669283][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4216.669286][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4216.669291][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4216.669295][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4216.669300][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4216.669303][    C2] RIP: 0033:0x7f439756d93b
[ 4216.669305][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4216.669308][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4216.669311][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4216.669313][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4216.669315][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4216.669317][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4216.669319][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4220.669119][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4220.669124][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4220.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 4220.669136][    C1] Tainted: [L]=SOFTLOCKUP
[ 4220.669137][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4220.669139][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4220.669144][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4220.669147][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4220.669149][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4220.669151][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4220.669153][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4220.669155][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4220.669157][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4220.669159][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4220.669161][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4220.669165][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4220.669166][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4220.669169][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4220.669170][    C1] PKRU: 55555554
[ 4220.669172][    C1] Call Trace:
[ 4220.669173][    C1]  <TASK>
[ 4220.669175][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4220.669179][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4220.669183][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4220.669186][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4220.669191][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4220.669194][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4220.669197][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4220.669200][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4220.669205][ C1] xa_store (lib/xarray.c:1734) 
[ 4220.669209][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4220.669212][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4220.669217][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4220.669220][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4220.669223][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4220.669228][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4220.669231][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4220.669237][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4220.669241][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4220.669245][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4220.669249][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4220.669253][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4220.669260][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4220.669263][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4220.669268][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4220.669272][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4220.669275][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4220.669279][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4220.669282][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4220.669285][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4220.669291][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4220.669294][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4220.669298][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4220.669302][    C1] RIP: 0033:0x7f439756d93b
[ 4220.669304][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4220.669307][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4220.669310][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4220.669312][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4220.669314][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4220.669316][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4220.669318][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4220.670134][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4220.670141][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4220.670145][ C3] softirqs last disabled at (0): 0x0 
| [ 4220.670156][    C3] Tainted: [L]=SOFTLOCKUP
[ 4220.670157][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4220.670160][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4220.670167][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4220.670171][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4220.670173][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4220.670176][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4220.670178][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4220.670179][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4220.670181][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4220.670183][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4220.670186][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4220.670190][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4220.670192][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4220.670194][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4220.670195][    C3] PKRU: 55555554
[ 4220.670197][    C3] Call Trace:
[ 4220.670201][    C3]  <IRQ>
[ 4220.670203][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4220.670209][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4220.670214][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4220.670217][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4220.670223][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4220.670227][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4220.670231][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4220.670235][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4220.670238][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4220.670242][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4220.670244][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4220.670247][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4220.670250][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4220.670255][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4220.670259][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4220.670262][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4220.670265][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4220.670271][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4220.670275][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4220.670280][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4220.670285][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4220.670291][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4220.670296][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4220.670299][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4220.670302][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4220.670305][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4220.670309][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4220.670311][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4220.670317][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4220.670320][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4220.670323][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4220.670327][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4220.670332][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4220.670335][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4220.670338][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4220.670341][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4220.670344][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4220.670349][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4220.670353][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4220.670356][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4220.670361][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4220.670365][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4220.670368][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4220.670373][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4220.670378][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4220.670383][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4220.670387][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4220.670390][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4220.670395][    C3]  </IRQ>
[ 4220.670396][    C3]  <TASK>
[ 4220.670398][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4220.670403][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4220.670407][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4220.670410][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4220.670413][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4220.670415][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4220.670418][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4220.670419][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4220.670421][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4220.670425][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4220.670431][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4220.670436][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4220.670440][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4220.670445][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4220.670448][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4220.670452][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4220.670454][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4220.670459][ C3] xas_alloc (lib/xarray.c:378) 
[ 4220.670464][ C3] xas_create (lib/xarray.c:685) 
[ 4220.670471][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4220.670475][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4220.670479][ C3] __xa_store (lib/xarray.c:1703) 
[ 4220.670483][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4220.670487][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4220.670490][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4220.670493][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4220.670498][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4220.670502][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4220.670505][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4220.670510][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4220.670513][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4220.670515][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4220.670520][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4220.670523][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4220.670528][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4220.670531][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4220.670536][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4220.670540][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4220.670544][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4220.670553][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4220.670556][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4220.670562][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4220.670567][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4220.670570][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4220.670574][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4220.670576][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4220.670580][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4220.670586][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4220.670590][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4220.670595][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4220.670598][    C3] RIP: 0033:0x7f439756d93b
[ 4220.670602][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4220.670605][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4220.670608][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4220.670610][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4220.670612][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4220.670614][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4220.670616][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4240.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4240.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4240.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 4240.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 4240.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4240.656140][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 4240.656143][ C0] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 4240.656146][    C0] RSP: 0018:ffffc900034c79f8 EFLAGS: 00000282
[ 4240.656149][    C0] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4240.656151][    C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4240.656153][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4240.656155][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4240.656157][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4240.656159][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4240.656161][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4240.656164][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4240.656166][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4240.656168][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4240.656170][    C0] PKRU: 55555554
[ 4240.656171][    C0] Call Trace:
[ 4240.656172][    C0]  <TASK>
[ 4240.656175][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4240.656180][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4240.656183][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4240.656187][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4240.656190][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4240.656196][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4240.656199][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4240.656201][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4240.656204][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4240.656209][ C0] xa_store (lib/xarray.c:1734) 
[ 4240.656213][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4240.656217][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4240.656222][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4240.656225][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4240.656227][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4240.656232][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4240.656235][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4240.656241][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4240.656245][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4240.656249][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4240.656253][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4240.656258][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4240.656264][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4240.656268][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4240.656272][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4240.656276][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4240.656280][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4240.656283][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4240.656286][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4240.656290][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4240.656295][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4240.656298][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4240.656302][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4240.656305][    C0] RIP: 0033:0x7f439756d93b
[ 4240.656308][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4240.656311][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4240.656314][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4240.656316][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4240.656318][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4240.656320][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4240.656321][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4244.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4244.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4244.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 4244.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 4244.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4244.669139][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4244.669144][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4244.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4244.669149][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4244.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4244.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4244.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4244.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4244.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4244.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4244.669165][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4244.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4244.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4244.669170][    C2] PKRU: 55555554
[ 4244.669172][    C2] Call Trace:
[ 4244.669173][    C2]  <TASK>
[ 4244.669176][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4244.669180][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4244.669183][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4244.669186][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4244.669191][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4244.669194][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4244.669197][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4244.669200][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4244.669205][ C2] xa_store (lib/xarray.c:1734) 
[ 4244.669209][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4244.669213][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4244.669218][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4244.669221][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4244.669223][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4244.669228][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4244.669231][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4244.669237][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4244.669241][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4244.669245][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4244.669249][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4244.669253][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4244.669259][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4244.669263][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4244.669267][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4244.669271][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4244.669274][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4244.669278][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4244.669281][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4244.669284][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4244.669289][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4244.669293][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4244.669297][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4244.669300][    C2] RIP: 0033:0x7f439756d93b
[ 4244.669303][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4244.669305][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4244.669308][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4244.669310][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4244.669312][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4244.669314][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4244.669315][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4246.646321][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 4246.646615][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 4246.646851][    C1] NMI backtrace for cpu 1
| [ 4246.646861][    C1] Tainted: [L]=SOFTLOCKUP
[ 4246.646863][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4246.646865][ C1] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30) 
[ 4246.646870][ C1] Code: c7 c7 b8 57 8c b8 5b 5d 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f
All code
========
   0:	c7 c7 b8 57 8c b8    	mov    $0xb88c57b8,%edi
   6:	5b                   	pop    %rbx
   7:	5d                   	pop    %rbp
   8:	41 5c                	pop    %r12
   a:	e9 7b 44 8d ff       	jmp    0xffffffffff8d448a
   f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 4f f0 ff ff       	jmp    0xfffffffffffff08a
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	2e                   	cs
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 4f f0 ff ff       	jmp    0xfffffffffffff060
  11:	66                   	data16
  12:	66                   	data16
  13:	2e                   	cs
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 4246.646873][    C1] RSP: 0018:ffffc900034b7a10 EFLAGS: 00000202
[ 4246.646876][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4246.646878][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4246.646880][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4246.646882][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4246.646884][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4246.646886][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4246.646888][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4246.646891][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4246.646893][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4246.646895][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4246.646897][    C1] PKRU: 55555554
[ 4246.646898][    C1] Call Trace:
[ 4246.646899][    C1]  <TASK>
[ 4246.646901][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4246.646906][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4246.646909][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4246.646913][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4246.646916][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4246.646920][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4246.646923][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4246.646926][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4246.646929][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4246.646934][ C1] xa_store (lib/xarray.c:1734) 
[ 4246.646938][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4246.646941][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4246.646946][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4246.646949][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4246.646952][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4246.646957][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4246.646960][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4246.646965][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4246.646969][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4246.646973][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4246.646977][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4246.646981][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4246.646988][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4246.646992][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4246.646996][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4246.647000][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4246.647004][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4246.647007][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4246.647010][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4246.647013][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4246.647018][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4246.647022][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4246.647027][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4246.647030][    C1] RIP: 0033:0x7f439756d93b
[ 4246.647033][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4246.647035][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4246.647038][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4246.647040][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4246.647043][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4246.647044][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4246.647046][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4246.647044][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 4246.647046][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4246.647052][    C1]  </TASK>
| [ 4246.647860][    C3] Tainted: [L]=SOFTLOCKUP
[ 4246.647862][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4246.647864][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4246.647869][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4246.647873][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4246.647876][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4246.647878][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4246.647881][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4246.647882][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4246.647884][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4246.647886][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4246.647889][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4246.647893][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4246.647895][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4246.647896][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4246.647898][    C3] PKRU: 55555554
[ 4246.647899][    C3] Call Trace:
[ 4246.647900][    C3]  <IRQ>
[ 4246.647902][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4246.647907][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4246.647912][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4246.647915][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4246.647919][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4246.647924][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4246.647927][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4246.647931][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4246.647934][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4246.647938][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4246.647941][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4246.647943][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4246.647946][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4246.647952][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4246.647955][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4246.647958][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4246.647961][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4246.647966][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4246.647969][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4246.647975][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4246.647978][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4246.647985][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4246.647990][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4246.647993][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4246.647996][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4246.647999][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4246.648002][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4246.648005][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4246.648011][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4246.648013][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4246.648017][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4246.648021][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4246.648024][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4246.648028][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4246.648031][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4246.648034][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4246.648038][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4246.648043][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4246.648047][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4246.648050][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4246.648055][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4246.648059][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4246.648062][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4246.648067][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4246.648071][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4246.648077][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4246.648080][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4246.648084][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4246.648087][    C3]  </IRQ>
[ 4246.648088][    C3]  <TASK>
[ 4246.648090][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4246.648095][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4246.648098][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4246.648100][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4246.648103][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4246.648104][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4246.648106][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4246.648108][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4246.648110][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4246.648114][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4246.648120][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4246.648125][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4246.648128][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4246.648133][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4246.648135][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4246.648139][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4246.648142][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4246.648146][ C3] xas_alloc (lib/xarray.c:378) 
[ 4246.648151][ C3] xas_create (lib/xarray.c:685) 
[ 4246.648156][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4246.648161][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4246.648164][ C3] __xa_store (lib/xarray.c:1703) 
[ 4246.648168][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4246.648173][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4246.648175][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4246.648178][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4246.648183][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4246.648187][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4246.648190][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4246.648194][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4246.648197][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4246.648200][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4246.648204][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4246.648207][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4246.648212][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4246.648215][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4246.648220][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4246.648223][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4246.648228][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4246.648234][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4246.648237][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4246.648243][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4246.648248][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4246.648252][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4246.648255][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4246.648258][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4246.648261][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4246.648268][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4246.648271][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4246.648276][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4246.648279][    C3] RIP: 0033:0x7f439756d93b
[ 4246.648284][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4246.648286][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4246.648289][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4246.648291][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4246.648293][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4246.648294][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4246.648296][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4268.656125][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4268.656131][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4268.656135][ C0] softirqs last disabled at (0): 0x0 
| [ 4268.656144][    C0] Tainted: [L]=SOFTLOCKUP
[ 4268.656146][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4268.656148][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4268.656154][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4268.656157][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4268.656160][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4268.656162][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4268.656164][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4268.656166][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4268.656168][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4268.656170][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4268.656172][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4268.656176][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4268.656178][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4268.656180][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4268.656182][    C0] PKRU: 55555554
[ 4268.656183][    C0] Call Trace:
[ 4268.656186][    C0]  <TASK>
[ 4268.656190][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4268.656193][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4268.656198][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4268.656202][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4268.656208][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4268.656211][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4268.656214][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4268.656216][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4268.656222][ C0] xa_store (lib/xarray.c:1734) 
[ 4268.656226][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4268.656231][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4268.656236][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4268.656239][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4268.656242][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4268.656247][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4268.656250][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4268.656256][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4268.656260][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4268.656265][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4268.656269][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4268.656274][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4268.656281][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4268.656285][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4268.656290][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4268.656295][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4268.656298][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4268.656303][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4268.656306][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4268.656309][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4268.656316][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4268.656319][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4268.656324][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4268.656327][    C0] RIP: 0033:0x7f439756d93b
[ 4268.656331][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4268.656334][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4268.656336][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4268.656339][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4268.656340][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4268.656342][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4268.656344][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4272.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4272.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4272.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 4272.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 4272.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4272.669140][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:103 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 4272.669144][ C2] Code: 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d 59 01 48 89 da 48 29 ea <48> 83 fa 10 0f 8e c0 00 00 00 41 89 eb 41 83 e3 07 75 7d 48 85 d2
All code
========
   0:	89 fd                	mov    %edi,%ebp
   2:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   9:	fc ff df 
   c:	4d 89 d1             	mov    %r10,%r9
   f:	48 c1 ed 03          	shr    $0x3,%rbp
  13:	49 c1 e9 03          	shr    $0x3,%r9
  17:	48 01 c5             	add    %rax,%rbp
  1a:	49 01 c1             	add    %rax,%r9
  1d:	48 89 e8             	mov    %rbp,%rax
  20:	49 8d 59 01          	lea    0x1(%r9),%rbx
  24:	48 89 da             	mov    %rbx,%rdx
  27:	48 29 ea             	sub    %rbp,%rdx
  2a:*	48 83 fa 10          	cmp    $0x10,%rdx		<-- trapping instruction
  2e:	0f 8e c0 00 00 00    	jle    0xf4
  34:	41 89 eb             	mov    %ebp,%r11d
  37:	41 83 e3 07          	and    $0x7,%r11d
  3b:	75 7d                	jne    0xba
  3d:	48 85 d2             	test   %rdx,%rdx

Code starting with the faulting instruction
===========================================
   0:	48 83 fa 10          	cmp    $0x10,%rdx
   4:	0f 8e c0 00 00 00    	jle    0xca
   a:	41 89 eb             	mov    %ebp,%r11d
   d:	41 83 e3 07          	and    $0x7,%r11d
  11:	75 7d                	jne    0x90
  13:	48 85 d2             	test   %rdx,%rdx
[ 4272.669147][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000202
[ 4272.669149][    C2] RAX: fffffbfff77dcb80 RBX: fffffbfff77dcb81 RCX: ffffffffb7cc5ea3
[ 4272.669151][    C2] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4272.669153][    C2] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4272.669155][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4272.669157][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4272.669159][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4272.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4272.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4272.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4272.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4272.669171][    C2] PKRU: 55555554
[ 4272.669172][    C2] Call Trace:
[ 4272.669174][    C2]  <TASK>
[ 4272.669177][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4272.669182][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4272.669185][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4272.669189][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4272.669192][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4272.669197][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4272.669200][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4272.669202][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4272.669205][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4272.669210][ C2] xa_store (lib/xarray.c:1734) 
[ 4272.669214][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4272.669218][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4272.669223][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4272.669226][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4272.669228][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4272.669233][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4272.669236][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4272.669242][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4272.669246][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4272.669250][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4272.669254][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4272.669258][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4272.669265][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4272.669268][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4272.669273][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4272.669277][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4272.669281][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4272.669284][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4272.669287][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4272.669290][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4272.669296][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4272.669300][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4272.669304][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4272.669307][    C2] RIP: 0033:0x7f439756d93b
[ 4272.669310][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4272.669313][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4272.669316][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4272.669318][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4272.669320][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4272.669322][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4272.669324][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4272.669351][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4272.669356][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4272.669359][ C1] softirqs last disabled at (0): 0x0 
| [ 4272.669368][    C1] Tainted: [L]=SOFTLOCKUP
[ 4272.669370][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4272.669372][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4272.669376][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4272.669379][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4272.669382][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4272.669384][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4272.669386][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4272.669388][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4272.669390][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4272.669392][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4272.669394][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4272.669397][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4272.669399][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4272.669401][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4272.669403][    C1] PKRU: 55555554
[ 4272.669404][    C1] Call Trace:
[ 4272.669405][    C1]  <TASK>
[ 4272.669408][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4272.669411][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4272.669415][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4272.669418][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4272.669423][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4272.669426][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4272.669429][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4272.669431][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4272.669437][ C1] xa_store (lib/xarray.c:1734) 
[ 4272.669441][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4272.669444][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4272.669449][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4272.669452][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4272.669455][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4272.669459][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4272.669463][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4272.669468][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4272.669472][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4272.669476][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4272.669480][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4272.669484][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4272.669491][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4272.669494][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4272.669498][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4272.669503][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4272.669506][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4272.669510][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4272.669513][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4272.669516][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4272.669521][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4272.669525][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4272.669529][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4272.669532][    C1] RIP: 0033:0x7f439756d93b
[ 4272.669535][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4272.669538][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4272.669541][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4272.669543][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4272.669544][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4272.669546][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4272.669548][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4272.670134][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4272.670143][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4272.670146][ C3] softirqs last disabled at (0): 0x0 
| [ 4272.670158][    C3] Tainted: [L]=SOFTLOCKUP
[ 4272.670160][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4272.670163][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4272.670170][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4272.670173][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4272.670176][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4272.670179][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4272.670181][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4272.670183][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4272.670185][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4272.670188][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4272.670190][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4272.670195][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4272.670197][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4272.670199][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4272.670200][    C3] PKRU: 55555554
[ 4272.670202][    C3] Call Trace:
[ 4272.670205][    C3]  <IRQ>
[ 4272.670207][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4272.670213][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4272.670218][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4272.670221][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4272.670226][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4272.670230][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4272.670233][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4272.670238][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4272.670241][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4272.670245][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4272.670247][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4272.670250][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4272.670253][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4272.670258][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4272.670263][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4272.670266][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4272.670270][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4272.670275][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4272.670279][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4272.670284][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4272.670289][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4272.670295][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4272.670301][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4272.670304][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4272.670307][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4272.670310][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4272.670314][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4272.670317][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4272.670323][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4272.670326][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4272.670329][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4272.670333][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4272.670338][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4272.670341][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4272.670344][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4272.670347][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4272.670351][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4272.670355][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4272.670360][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4272.670363][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4272.670369][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4272.670373][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4272.670376][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4272.670381][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4272.670385][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4272.670391][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4272.670395][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4272.670398][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4272.670402][    C3]  </IRQ>
[ 4272.670403][    C3]  <TASK>
[ 4272.670405][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4272.670410][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4272.670414][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4272.670417][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4272.670420][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4272.670422][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4272.670424][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4272.670427][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4272.670429][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4272.670433][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4272.670439][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4272.670445][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4272.670448][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4272.670453][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4272.670456][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4272.670460][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4272.670462][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4272.670468][ C3] xas_alloc (lib/xarray.c:378) 
[ 4272.670472][ C3] xas_create (lib/xarray.c:685) 
[ 4272.670478][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4272.670482][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4272.670486][ C3] __xa_store (lib/xarray.c:1703) 
[ 4272.670491][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4272.670495][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4272.670498][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4272.670501][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4272.670506][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4272.670510][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4272.670513][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4272.670518][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4272.670521][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4272.670524][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4272.670528][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4272.670532][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4272.670536][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4272.670540][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4272.670544][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4272.670548][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4272.670553][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4272.670561][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4272.670564][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4272.670570][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4272.670574][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4272.670577][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4272.670581][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4272.670583][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4272.670587][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4272.670593][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4272.670596][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4272.670601][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4272.670605][    C3] RIP: 0033:0x7f439756d93b
[ 4272.670609][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4272.670611][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4272.670614][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4272.670616][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4272.670618][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4272.670620][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4272.670622][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4296.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4296.656123][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4296.656127][ C0] softirqs last disabled at (0): 0x0 
| [ 4296.656135][    C0] Tainted: [L]=SOFTLOCKUP
[ 4296.656137][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4296.656139][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4296.656144][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4296.656146][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4296.656149][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4296.656151][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4296.656153][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4296.656155][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4296.656157][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4296.656159][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4296.656161][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4296.656165][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4296.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4296.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4296.656171][    C0] PKRU: 55555554
[ 4296.656172][    C0] Call Trace:
[ 4296.656174][    C0]  <TASK>
[ 4296.656176][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4296.656180][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4296.656184][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4296.656187][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4296.656192][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4296.656195][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4296.656198][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4296.656201][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4296.656207][ C0] xa_store (lib/xarray.c:1734) 
[ 4296.656211][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4296.656214][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4296.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4296.656222][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4296.656225][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4296.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4296.656233][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4296.656238][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4296.656242][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4296.656246][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4296.656250][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4296.656254][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4296.656260][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4296.656264][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4296.656268][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4296.656272][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4296.656276][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4296.656279][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4296.656282][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4296.656286][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4296.656291][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4296.656295][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4296.656299][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4296.656302][    C0] RIP: 0033:0x7f439756d93b
[ 4296.656305][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4296.656308][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4296.656311][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4296.656313][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4296.656315][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4296.656316][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4296.656318][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4300.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4300.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4300.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 4300.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 4300.669137][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4300.669139][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:190) 
[ 4300.669143][ C2] Code: 00 00 48 85 d2 0f 84 4c ff ff ff 41 83 e2 07 49 39 d1 0f 85 34 ff ff ff 45 3a 11 0f 8d 2b ff ff ff 5b b8 01 00 00 00 5d 41 5c <c3> cc cc cc cc 41 bc 08 00 00 00 45 29 dc 49 8d 14 2c eb 0c 48 83
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	48 85 d2             	test   %rdx,%rdx
   5:	0f 84 4c ff ff ff    	je     0xffffffffffffff57
   b:	41 83 e2 07          	and    $0x7,%r10d
   f:	49 39 d1             	cmp    %rdx,%r9
  12:	0f 85 34 ff ff ff    	jne    0xffffffffffffff4c
  18:	45 3a 11             	cmp    (%r9),%r10b
  1b:	0f 8d 2b ff ff ff    	jge    0xffffffffffffff4c
  21:	5b                   	pop    %rbx
  22:	b8 01 00 00 00       	mov    $0x1,%eax
  27:	5d                   	pop    %rbp
  28:	41 5c                	pop    %r12
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	41 bc 08 00 00 00    	mov    $0x8,%r12d
  35:	45 29 dc             	sub    %r11d,%r12d
  38:	49 8d 14 2c          	lea    (%r12,%rbp,1),%rdx
  3c:	eb 0c                	jmp    0x4a
  3e:	48                   	rex.W
  3f:	83                   	.byte 0x83

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	41 bc 08 00 00 00    	mov    $0x8,%r12d
   b:	45 29 dc             	sub    %r11d,%r12d
   e:	49 8d 14 2c          	lea    (%r12,%rbp,1),%rdx
  12:	eb 0c                	jmp    0x20
  14:	48                   	rex.W
  15:	83                   	.byte 0x83
[ 4300.669146][    C2] RSP: 0018:ffffc900034d7a10 EFLAGS: 00000246
[ 4300.669149][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4300.669151][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4300.669153][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4300.669155][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4300.669157][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4300.669159][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4300.669161][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4300.669165][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4300.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4300.669168][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4300.669170][    C2] PKRU: 55555554
[ 4300.669171][    C2] Call Trace:
[ 4300.669173][    C2]  <TASK>
[ 4300.669174][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4300.669180][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4300.669183][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4300.669187][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4300.669190][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4300.669195][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4300.669198][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4300.669201][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4300.669204][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4300.669209][ C2] xa_store (lib/xarray.c:1734) 
[ 4300.669213][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4300.669217][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4300.669221][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4300.669224][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4300.669227][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4300.669232][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4300.669235][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4300.669241][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4300.669244][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4300.669249][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4300.669253][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4300.669257][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4300.669264][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4300.669267][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4300.669272][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4300.669276][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4300.669279][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4300.669283][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4300.669286][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4300.669289][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4300.669295][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4300.669298][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4300.669302][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4300.669306][    C2] RIP: 0033:0x7f439756d93b
[ 4300.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4300.669311][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4300.669313][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4300.669315][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4300.669317][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4300.669319][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4300.669321][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4300.669347][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4300.669352][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4300.669355][ C1] softirqs last disabled at (0): 0x0 
| [ 4300.669364][    C1] Tainted: [L]=SOFTLOCKUP
[ 4300.669365][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4300.669367][ C1] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 4300.669370][ C1] Code: ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 <48> 89 e8 49 8d 59 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e c0 00 00
All code
========
   0:	ff                   	(bad)
   1:	ff 48 39             	decl   0x39(%rax)
   4:	c7                   	(bad)
   5:	76 dd                	jbe    0xffffffffffffffe4
   7:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   c:	48 89 fd             	mov    %rdi,%rbp
   f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  16:	fc ff df 
  19:	4d 89 d1             	mov    %r10,%r9
  1c:	48 c1 ed 03          	shr    $0x3,%rbp
  20:	49 c1 e9 03          	shr    $0x3,%r9
  24:	48 01 c5             	add    %rax,%rbp
  27:	49 01 c1             	add    %rax,%r9
  2a:*	48 89 e8             	mov    %rbp,%rax		<-- trapping instruction
  2d:	49 8d 59 01          	lea    0x1(%r9),%rbx
  31:	48 89 da             	mov    %rbx,%rdx
  34:	48 29 ea             	sub    %rbp,%rdx
  37:	48 83 fa 10          	cmp    $0x10,%rdx
  3b:	0f                   	.byte 0xf
  3c:	8e c0                	mov    %eax,%es
	...

Code starting with the faulting instruction
===========================================
   0:	48 89 e8             	mov    %rbp,%rax
   3:	49 8d 59 01          	lea    0x1(%r9),%rbx
   7:	48 89 da             	mov    %rbx,%rdx
   a:	48 29 ea             	sub    %rbp,%rdx
   d:	48 83 fa 10          	cmp    $0x10,%rdx
  11:	0f                   	.byte 0xf
  12:	8e c0                	mov    %eax,%es
	...
[ 4300.669373][    C1] RSP: 0018:ffffc900034b79f8 EFLAGS: 00000282
[ 4300.669376][    C1] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4300.669378][    C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4300.669380][    C1] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4300.669382][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4300.669384][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4300.669386][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4300.669388][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4300.669392][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4300.669394][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4300.669395][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4300.669397][    C1] PKRU: 55555554
[ 4300.669399][    C1] Call Trace:
[ 4300.669400][    C1]  <TASK>
[ 4300.669402][ C1] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4300.669407][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4300.669411][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4300.669415][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4300.669418][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4300.669424][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4300.669427][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4300.669430][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4300.669432][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4300.669437][ C1] xa_store (lib/xarray.c:1734) 
[ 4300.669441][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4300.669445][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4300.669450][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4300.669453][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4300.669455][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4300.669460][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4300.669464][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4300.669469][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4300.669473][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4300.669477][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4300.669481][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4300.669485][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4300.669491][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4300.669495][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4300.669499][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4300.669503][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4300.669507][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4300.669511][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4300.669513][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4300.669517][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4300.669522][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4300.669525][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4300.669530][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4300.669532][    C1] RIP: 0033:0x7f439756d93b
[ 4300.669535][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4300.669537][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4300.669540][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4300.669542][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4300.669544][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4300.669546][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4300.669548][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4300.670132][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4300.670141][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4300.670145][ C3] softirqs last disabled at (0): 0x0 
| [ 4300.670157][    C3] Tainted: [L]=SOFTLOCKUP
[ 4300.670159][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4300.670161][ C3] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:31) 
[ 4300.670168][ C3] Code: 41 5c e9 7b 44 8d ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 4f f0 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
   0:	41 5c                	pop    %r12
   2:	e9 7b 44 8d ff       	jmp    0xffffffffff8d4482
   7:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
  2a:*	89 f6                	mov    %esi,%esi		<-- trapping instruction
  2c:	31 d2                	xor    %edx,%edx
  2e:	e9 4f f0 ff ff       	jmp    0xfffffffffffff082
  33:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3a:	00 00 00 00 
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	89 f6                	mov    %esi,%esi
   2:	31 d2                	xor    %edx,%edx
   4:	e9 4f f0 ff ff       	jmp    0xfffffffffffff058
   9:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  10:	00 00 00 00 
  14:	0f                   	.byte 0xf
  15:	1f                   	(bad)
[ 4300.670172][    C3] RSP: 0018:ffffc90000270a40 EFLAGS: 00000202
[ 4300.670175][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4300.670177][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4300.670180][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4300.670182][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4300.670184][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4300.670186][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4300.670189][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4300.670193][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4300.670195][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4300.670197][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4300.670199][    C3] PKRU: 55555554
[ 4300.670200][    C3] Call Trace:
[ 4300.670204][    C3]  <IRQ>
[ 4300.670206][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4300.670213][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4300.670218][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4300.670223][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4300.670226][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4300.670230][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4300.670235][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4300.670238][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4300.670242][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4300.670246][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4300.670250][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4300.670252][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4300.670255][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4300.670258][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4300.670264][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4300.670268][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4300.670271][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4300.670275][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4300.670280][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4300.670284][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4300.670289][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4300.670293][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4300.670299][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4300.670305][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4300.670308][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4300.670311][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4300.670314][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4300.670318][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4300.670321][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4300.670328][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4300.670331][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4300.670334][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4300.670338][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4300.670342][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4300.670346][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4300.670349][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4300.670352][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4300.670355][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4300.670360][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4300.670365][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4300.670368][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4300.670373][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4300.670377][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4300.670381][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4300.670386][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4300.670390][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4300.670396][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4300.670399][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4300.670402][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4300.670406][    C3]  </IRQ>
[ 4300.670407][    C3]  <TASK>
[ 4300.670409][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4300.670414][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4300.670418][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4300.670421][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4300.670424][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4300.670426][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4300.670428][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4300.670430][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4300.670433][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4300.670436][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4300.670442][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4300.670448][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4300.670451][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4300.670456][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4300.670459][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4300.670463][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4300.670465][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4300.670470][ C3] xas_alloc (lib/xarray.c:378) 
[ 4300.670475][ C3] xas_create (lib/xarray.c:685) 
[ 4300.670481][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4300.670486][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4300.670490][ C3] __xa_store (lib/xarray.c:1703) 
[ 4300.670494][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4300.670499][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4300.670502][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4300.670505][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4300.670509][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4300.670513][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4300.670517][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4300.670521][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4300.670524][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4300.670527][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4300.670531][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4300.670534][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4300.670538][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4300.670542][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4300.670547][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4300.670550][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4300.670555][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4300.670563][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4300.670566][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4300.670572][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4300.670576][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4300.670579][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4300.670582][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4300.670585][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4300.670588][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4300.670594][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4300.670598][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4300.670603][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4300.670606][    C3] RIP: 0033:0x7f439756d93b
[ 4300.670609][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4300.670612][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4300.670615][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4300.670617][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4300.670619][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4300.670620][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4300.670622][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4324.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4324.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4324.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 4324.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 4324.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4324.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4324.656145][ C0] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 4324.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4324.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4324.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4324.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4324.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4324.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4324.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4324.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4324.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4324.656167][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4324.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4324.656170][    C0] PKRU: 55555554
[ 4324.656172][    C0] Call Trace:
[ 4324.656173][    C0]  <TASK>
[ 4324.656175][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4324.656179][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4324.656183][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4324.656186][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4324.656191][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4324.656194][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4324.656197][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4324.656200][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4324.656205][ C0] xa_store (lib/xarray.c:1734) 
[ 4324.656209][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4324.656212][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4324.656217][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4324.656220][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4324.656223][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4324.656227][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4324.656230][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4324.656236][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4324.656240][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4324.656244][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4324.656248][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4324.656253][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4324.656259][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4324.656263][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4324.656267][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4324.656271][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4324.656275][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4324.656278][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4324.656281][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4324.656284][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4324.656289][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4324.656293][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4324.656297][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4324.656301][    C0] RIP: 0033:0x7f439756d93b
[ 4324.656303][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4324.656306][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4324.656309][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4324.656311][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4324.656313][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4324.656315][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4324.656317][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4324.680813][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 4324.681090][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 4324.681336][    C1] NMI backtrace for cpu 1
| [ 4324.681345][    C1] Tainted: [L]=SOFTLOCKUP
[ 4324.681347][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4324.681349][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4324.681354][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4324.681357][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4324.681360][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4324.681362][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4324.681364][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4324.681366][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4324.681368][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4324.681370][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4324.681372][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4324.681375][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4324.681377][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4324.681378][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4324.681380][    C1] PKRU: 55555554
[ 4324.681381][    C1] Call Trace:
[ 4324.681382][    C1]  <TASK>
[ 4324.681384][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4324.681388][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4324.681391][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4324.681394][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4324.681399][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4324.681402][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4324.681405][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4324.681407][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4324.681412][ C1] xa_store (lib/xarray.c:1734) 
[ 4324.681416][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4324.681419][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4324.681425][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4324.681427][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4324.681430][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4324.681434][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4324.681438][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4324.681443][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4324.681447][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4324.681451][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4324.681455][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4324.681459][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4324.681465][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4324.681469][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4324.681473][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4324.681477][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4324.681481][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4324.681484][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4324.681487][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4324.681491][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4324.681495][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4324.681499][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4324.681503][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4324.681506][    C1] RIP: 0033:0x7f439756d93b
[ 4324.681509][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4324.681512][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4324.681514][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4324.681517][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4324.681518][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4324.681520][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4324.681522][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4324.681520][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 4324.681522][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4324.681527][    C1]  </TASK>
| [ 4324.682344][    C3] Tainted: [L]=SOFTLOCKUP
[ 4324.682346][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4324.682348][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4324.682354][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4324.682357][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4324.682361][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4324.682363][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4324.682365][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4324.682367][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4324.682369][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4324.682371][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4324.682374][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4324.682378][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4324.682380][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4324.682382][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4324.682384][    C3] PKRU: 55555554
[ 4324.682385][    C3] Call Trace:
[ 4324.682386][    C3]  <IRQ>
[ 4324.682387][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4324.682393][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4324.682398][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4324.682401][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4324.682405][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4324.682409][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4324.682413][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4324.682417][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4324.682420][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4324.682423][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4324.682425][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4324.682428][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4324.682431][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4324.682436][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4324.682440][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4324.682442][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4324.682445][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4324.682451][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4324.682454][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4324.682460][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4324.682463][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4324.682470][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4324.682474][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4324.682477][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4324.682480][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4324.682484][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4324.682487][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4324.682489][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4324.682495][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4324.682498][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4324.682501][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4324.682505][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4324.682509][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4324.682512][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4324.682515][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4324.682519][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4324.682522][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4324.682527][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4324.682531][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4324.682534][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4324.682539][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4324.682543][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4324.682546][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4324.682551][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4324.682555][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4324.682560][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4324.682564][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4324.682567][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4324.682570][    C3]  </IRQ>
[ 4324.682571][    C3]  <TASK>
[ 4324.682573][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4324.682578][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4324.682581][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4324.682584][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4324.682586][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4324.682588][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4324.682590][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4324.682592][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4324.682594][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4324.682598][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4324.682603][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4324.682608][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4324.682612][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4324.682616][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4324.682619][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4324.682623][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4324.682625][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4324.682630][ C3] xas_alloc (lib/xarray.c:378) 
[ 4324.682634][ C3] xas_create (lib/xarray.c:685) 
[ 4324.682640][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4324.682644][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4324.682648][ C3] __xa_store (lib/xarray.c:1703) 
[ 4324.682652][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4324.682656][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4324.682659][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4324.682662][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4324.682667][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4324.682671][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4324.682674][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4324.682678][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4324.682681][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4324.682684][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4324.682688][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4324.682691][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4324.682696][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4324.682699][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4324.682704][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4324.682707][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4324.682712][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4324.682718][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4324.682722][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4324.682727][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4324.682732][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4324.682735][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4324.682738][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4324.682741][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4324.682745][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4324.682751][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4324.682755][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4324.682760][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4324.682763][    C3] RIP: 0033:0x7f439756d93b
[ 4324.682768][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4324.682770][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4324.682773][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4324.682774][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4324.682776][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4324.682777][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4324.682779][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4328.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4328.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4328.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 4328.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 4328.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4328.669140][ C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:129 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 4328.669144][ C2] Code: ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 <48> 89 e8 49 8d 59 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e c0 00 00
All code
========
   0:	ff                   	(bad)
   1:	ff 48 39             	decl   0x39(%rax)
   4:	c7                   	(bad)
   5:	76 dd                	jbe    0xffffffffffffffe4
   7:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   c:	48 89 fd             	mov    %rdi,%rbp
   f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  16:	fc ff df 
  19:	4d 89 d1             	mov    %r10,%r9
  1c:	48 c1 ed 03          	shr    $0x3,%rbp
  20:	49 c1 e9 03          	shr    $0x3,%r9
  24:	48 01 c5             	add    %rax,%rbp
  27:	49 01 c1             	add    %rax,%r9
  2a:*	48 89 e8             	mov    %rbp,%rax		<-- trapping instruction
  2d:	49 8d 59 01          	lea    0x1(%r9),%rbx
  31:	48 89 da             	mov    %rbx,%rdx
  34:	48 29 ea             	sub    %rbp,%rdx
  37:	48 83 fa 10          	cmp    $0x10,%rdx
  3b:	0f                   	.byte 0xf
  3c:	8e c0                	mov    %eax,%es
	...

Code starting with the faulting instruction
===========================================
   0:	48 89 e8             	mov    %rbp,%rax
   3:	49 8d 59 01          	lea    0x1(%r9),%rbx
   7:	48 89 da             	mov    %rbx,%rdx
   a:	48 29 ea             	sub    %rbp,%rdx
   d:	48 83 fa 10          	cmp    $0x10,%rdx
  11:	0f                   	.byte 0xf
  12:	8e c0                	mov    %eax,%es
	...
[ 4328.669147][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000282
[ 4328.669150][    C2] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4328.669152][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4328.669154][    C2] RBP: fffffbfff77dcb80 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4328.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4328.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4328.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4328.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4328.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4328.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4328.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4328.669171][    C2] PKRU: 55555554
[ 4328.669173][    C2] Call Trace:
[ 4328.669174][    C2]  <TASK>
[ 4328.669177][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4328.669181][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4328.669185][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4328.669188][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4328.669191][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4328.669196][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4328.669199][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4328.669202][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4328.669205][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4328.669211][ C2] xa_store (lib/xarray.c:1734) 
[ 4328.669214][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4328.669218][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4328.669223][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4328.669226][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4328.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4328.669233][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4328.669237][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4328.669242][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4328.669246][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4328.669250][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4328.669254][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4328.669258][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4328.669264][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4328.669268][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4328.669272][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4328.669276][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4328.669280][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4328.669283][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4328.669286][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4328.669290][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4328.669295][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4328.669298][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4328.669303][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4328.669305][    C2] RIP: 0033:0x7f439756d93b
[ 4328.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4328.669312][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4328.669314][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4328.669316][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4328.669318][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4328.669320][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4328.669322][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4348.670133][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4348.670140][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4348.670144][ C3] softirqs last disabled at (0): 0x0 
| [ 4348.670155][    C3] Tainted: [L]=SOFTLOCKUP
[ 4348.670157][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4348.670159][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4348.670166][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4348.670170][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4348.670173][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4348.670175][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4348.670177][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4348.670179][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4348.670181][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4348.670184][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4348.670186][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4348.670190][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4348.670192][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4348.670194][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4348.670196][    C3] PKRU: 55555554
[ 4348.670197][    C3] Call Trace:
[ 4348.670201][    C3]  <IRQ>
[ 4348.670202][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4348.670207][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4348.670212][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4348.670215][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4348.670220][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4348.670224][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4348.670227][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4348.670231][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4348.670234][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4348.670237][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4348.670240][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4348.670243][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4348.670245][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4348.670250][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4348.670255][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4348.670258][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4348.670262][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4348.670268][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4348.670272][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4348.670277][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4348.670281][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4348.670287][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4348.670293][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4348.670296][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4348.670299][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4348.670302][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4348.670305][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4348.670308][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4348.670314][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4348.670317][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4348.670320][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4348.670324][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4348.670328][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4348.670332][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4348.670335][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4348.670338][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4348.670342][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4348.670346][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4348.670351][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4348.670353][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4348.670359][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4348.670362][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4348.670366][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4348.670370][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4348.670375][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4348.670380][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4348.670384][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4348.670387][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4348.670391][    C3]  </IRQ>
[ 4348.670392][    C3]  <TASK>
[ 4348.670394][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4348.670399][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4348.670402][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4348.670405][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4348.670408][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4348.670410][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4348.670411][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4348.670413][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4348.670415][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4348.670419][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4348.670425][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4348.670431][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4348.670434][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4348.670439][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4348.670442][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4348.670446][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4348.670448][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4348.670454][ C3] xas_alloc (lib/xarray.c:378) 
[ 4348.670458][ C3] xas_create (lib/xarray.c:685) 
[ 4348.670464][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4348.670468][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4348.670472][ C3] __xa_store (lib/xarray.c:1703) 
[ 4348.670476][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4348.670481][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4348.670483][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4348.670486][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4348.670491][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4348.670495][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4348.670498][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4348.670503][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4348.670506][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4348.670509][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4348.670513][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4348.670516][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4348.670521][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4348.670525][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4348.670529][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4348.670533][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4348.670537][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4348.670545][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4348.670548][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4348.670554][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4348.670558][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4348.670562][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4348.670565][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4348.670568][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4348.670571][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4348.670577][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4348.670581][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4348.670585][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4348.670589][    C3] RIP: 0033:0x7f439756d93b
[ 4348.670592][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4348.670595][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4348.670598][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4348.670600][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4348.670601][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4348.670603][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4348.670605][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4352.656118][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4352.656123][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4352.656126][ C0] softirqs last disabled at (0): 0x0 
| [ 4352.656134][    C0] Tainted: [L]=SOFTLOCKUP
[ 4352.656136][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4352.656137][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4352.656141][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4352.656144][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4352.656147][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4352.656149][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4352.656151][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4352.656153][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4352.656155][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4352.656157][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4352.656159][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4352.656163][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4352.656165][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4352.656166][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4352.656168][    C0] PKRU: 55555554
[ 4352.656169][    C0] Call Trace:
[ 4352.656171][    C0]  <TASK>
[ 4352.656173][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4352.656177][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4352.656180][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4352.656184][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4352.656189][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4352.656192][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4352.656195][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4352.656198][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4352.656203][ C0] xa_store (lib/xarray.c:1734) 
[ 4352.656207][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4352.656211][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4352.656216][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4352.656219][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4352.656222][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4352.656226][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4352.656229][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4352.656235][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4352.656239][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4352.656243][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4352.656247][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4352.656252][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4352.656258][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4352.656262][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4352.656266][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4352.656270][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4352.656274][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4352.656277][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4352.656280][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4352.656284][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4352.656289][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4352.656293][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4352.656297][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4352.656301][    C0] RIP: 0033:0x7f439756d93b
[ 4352.656303][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4352.656306][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4352.656309][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4352.656311][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4352.656313][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4352.656315][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4352.656317][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4352.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4352.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4352.669129][ C1] softirqs last disabled at (0): 0x0 
| [ 4352.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 4352.669138][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4352.669140][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4352.669145][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4352.669148][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4352.669150][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4352.669152][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4352.669155][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4352.669157][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4352.669159][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4352.669161][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4352.669163][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4352.669166][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4352.669168][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4352.669170][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4352.669172][    C1] PKRU: 55555554
[ 4352.669173][    C1] Call Trace:
[ 4352.669175][    C1]  <TASK>
[ 4352.669177][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4352.669181][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4352.669184][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4352.669187][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4352.669192][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4352.669195][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4352.669198][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4352.669201][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4352.669206][ C1] xa_store (lib/xarray.c:1734) 
[ 4352.669210][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4352.669213][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4352.669218][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4352.669221][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4352.669224][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4352.669228][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4352.669232][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4352.669237][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4352.669241][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4352.669246][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4352.669250][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4352.669254][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4352.669261][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4352.669265][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4352.669269][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4352.669273][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4352.669276][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4352.669280][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4352.669283][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4352.669286][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4352.669291][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4352.669295][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4352.669299][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4352.669302][    C1] RIP: 0033:0x7f439756d93b
[ 4352.669305][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4352.669307][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4352.669310][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4352.669312][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4352.669314][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4352.669316][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4352.669318][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4356.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4356.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4356.669127][ C2] softirqs last disabled at (0): 0x0 
| [ 4356.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 4356.669137][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4356.669139][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4356.669143][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4356.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4356.669149][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4356.669151][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4356.669153][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4356.669155][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4356.669157][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4356.669159][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4356.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4356.669165][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4356.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4356.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4356.669171][    C2] PKRU: 55555554
[ 4356.669172][    C2] Call Trace:
[ 4356.669175][    C2]  <TASK>
[ 4356.669177][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4356.669181][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4356.669185][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4356.669188][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4356.669193][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4356.669197][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4356.669200][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4356.669203][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4356.669208][ C2] xa_store (lib/xarray.c:1734) 
[ 4356.669212][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4356.669216][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4356.669221][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4356.669224][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4356.669226][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4356.669231][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4356.669234][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4356.669240][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4356.669243][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4356.669248][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4356.669252][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4356.669256][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4356.669262][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4356.669266][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4356.669270][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4356.669274][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4356.669277][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4356.669281][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4356.669284][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4356.669287][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4356.669293][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4356.669296][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4356.669300][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4356.669304][    C2] RIP: 0033:0x7f439756d93b
[ 4356.669306][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4356.669309][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4356.669312][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4356.669314][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4356.669316][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4356.669317][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4356.669320][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4376.670134][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4376.670143][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4376.670146][ C3] softirqs last disabled at (0): 0x0 
| [ 4376.670158][    C3] Tainted: [L]=SOFTLOCKUP
[ 4376.670160][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4376.670162][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4376.670170][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4376.670173][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4376.670176][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4376.670178][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4376.670180][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4376.670182][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4376.670184][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4376.670186][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4376.670189][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4376.670194][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4376.670196][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4376.670197][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4376.670199][    C3] PKRU: 55555554
[ 4376.670201][    C3] Call Trace:
[ 4376.670205][    C3]  <IRQ>
[ 4376.670206][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4376.670212][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4376.670218][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4376.670221][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4376.670226][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4376.670231][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4376.670234][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4376.670238][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4376.670241][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4376.670244][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4376.670247][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4376.670249][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4376.670252][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4376.670258][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4376.670262][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4376.670266][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4376.670269][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4376.670274][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4376.670279][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4376.670284][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4376.670289][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4376.670295][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4376.670300][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4376.670303][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4376.670306][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4376.670310][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4376.670313][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4376.670315][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4376.670321][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4376.670324][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4376.670327][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4376.670331][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4376.670335][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4376.670338][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4376.670341][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4376.670345][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4376.670348][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4376.670352][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4376.670357][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4376.670360][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4376.670365][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4376.670369][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4376.670372][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4376.670377][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4376.670382][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4376.670387][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4376.670391][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4376.670394][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4376.670398][    C3]  </IRQ>
[ 4376.670399][    C3]  <TASK>
[ 4376.670400][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4376.670406][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4376.670409][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4376.670411][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4376.670414][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4376.670416][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4376.670418][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4376.670420][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4376.670422][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4376.670426][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4376.670431][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4376.670437][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4376.670441][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4376.670445][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4376.670448][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4376.670452][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4376.670455][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4376.670460][ C3] xas_alloc (lib/xarray.c:378) 
[ 4376.670465][ C3] xas_create (lib/xarray.c:685) 
[ 4376.670470][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4376.670475][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4376.670478][ C3] __xa_store (lib/xarray.c:1703) 
[ 4376.670483][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4376.670487][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4376.670490][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4376.670493][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4376.670497][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4376.670501][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4376.670504][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4376.670509][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4376.670512][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4376.670514][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4376.670518][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4376.670522][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4376.670526][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4376.670530][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4376.670535][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4376.670539][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4376.670543][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4376.670551][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4376.670555][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4376.670560][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4376.670564][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4376.670567][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4376.670571][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4376.670573][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4376.670577][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4376.670583][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4376.670587][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4376.670591][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4376.670595][    C3] RIP: 0033:0x7f439756d93b
[ 4376.670599][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4376.670602][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4376.670605][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4376.670606][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4376.670608][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4376.670610][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4376.670612][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4380.656123][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4380.656130][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4380.656133][ C0] softirqs last disabled at (0): 0x0 
| [ 4380.656143][    C0] Tainted: [L]=SOFTLOCKUP
[ 4380.656144][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4380.656146][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4380.656152][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4380.656156][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4380.656158][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4380.656160][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4380.656162][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4380.656164][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4380.656166][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4380.656168][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4380.656170][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4380.656174][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4380.656176][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4380.656178][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4380.656179][    C0] PKRU: 55555554
[ 4380.656180][    C0] Call Trace:
[ 4380.656182][    C0]  <TASK>
[ 4380.656184][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4380.656188][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4380.656193][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4380.656196][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4380.656201][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4380.656204][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4380.656207][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4380.656210][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4380.656215][ C0] xa_store (lib/xarray.c:1734) 
[ 4380.656219][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4380.656223][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4380.656228][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4380.656231][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4380.656234][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4380.656239][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4380.656243][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4380.656248][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4380.656252][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4380.656257][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4380.656261][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4380.656265][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4380.656272][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4380.656276][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4380.656281][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4380.656286][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4380.656289][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4380.656294][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4380.656297][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4380.656300][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4380.656306][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4380.656309][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4380.656314][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4380.656318][    C0] RIP: 0033:0x7f439756d93b
[ 4380.656321][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4380.656324][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4380.656327][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4380.656329][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4380.656331][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4380.656333][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4380.656335][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4380.669121][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4380.669126][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4380.669129][ C1] softirqs last disabled at (0): 0x0 
| [ 4380.669138][    C1] Tainted: [L]=SOFTLOCKUP
[ 4380.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4380.669141][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4380.669146][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4380.669149][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4380.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4380.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4380.669155][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4380.669158][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4380.669159][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4380.669162][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4380.669164][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4380.669167][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4380.669169][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4380.669171][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4380.669172][    C1] PKRU: 55555554
[ 4380.669173][    C1] Call Trace:
[ 4380.669175][    C1]  <TASK>
[ 4380.669177][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4380.669181][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4380.669185][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4380.669188][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4380.669193][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4380.669196][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4380.669199][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4380.669202][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4380.669207][ C1] xa_store (lib/xarray.c:1734) 
[ 4380.669211][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4380.669214][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4380.669219][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4380.669222][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4380.669225][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4380.669229][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4380.669233][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4380.669238][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4380.669242][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4380.669246][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4380.669250][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4380.669255][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4380.669261][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4380.669265][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4380.669269][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4380.669274][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4380.669277][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4380.669281][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4380.669283][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4380.669287][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4380.669292][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4380.669296][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4380.669300][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4380.669303][    C1] RIP: 0033:0x7f439756d93b
[ 4380.669305][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4380.669308][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4380.669311][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4380.669313][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4380.669315][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4380.669317][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4380.669318][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4384.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4384.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4384.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 4384.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 4384.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4384.669140][ C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:177 mm/kasan/generic.c:189) 
[ 4384.669144][ C2] Code: ff ff ff ff ff ff fe 48 39 c7 77 23 44 89 c2 e8 b7 e7 ff ff 83 f0 01 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff <48> 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	ff                   	(bad)
   3:	ff                   	(bad)
   4:	ff                   	(bad)
   5:	ff                   	(bad)
   6:	fe 48 39             	decb   0x39(%rax)
   9:	c7                   	(bad)
   a:	77 23                	ja     0x2f
   c:	44 89 c2             	mov    %r8d,%edx
   f:	e8 b7 e7 ff ff       	call   0xffffffffffffe7cb
  14:	83 f0 01             	xor    $0x1,%eax
  17:	5b                   	pop    %rbx
  18:	5d                   	pop    %rbp
  19:	41 5c                	pop    %r12
  1b:	c3                   	ret
  1c:	cc                   	int3
  1d:	cc                   	int3
  1e:	cc                   	int3
  1f:	cc                   	int3
  20:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  27:	7f ff ff 
  2a:*	48 39 c7             	cmp    %rax,%rdi		<-- trapping instruction
  2d:	76 dd                	jbe    0xc
  2f:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  34:	48 89 fd             	mov    %rdi,%rbp
  37:	48                   	rex.W
  38:	b8 00 00 00 00       	mov    $0x0,%eax
  3d:	00 fc                	add    %bh,%ah
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	48 39 c7             	cmp    %rax,%rdi
   3:	76 dd                	jbe    0xffffffffffffffe2
   5:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
   a:	48 89 fd             	mov    %rdi,%rbp
   d:	48                   	rex.W
   e:	b8 00 00 00 00       	mov    $0x0,%eax
  13:	00 fc                	add    %bh,%ah
  15:	ff                   	.byte 0xff
[ 4384.669147][    C2] RSP: 0018:ffffc900034d79f8 EFLAGS: 00000282
[ 4384.669149][    C2] RAX: ffff7fffffffffff RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4384.669152][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4384.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4384.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4384.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4384.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4384.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4384.669165][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4384.669167][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4384.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4384.669170][    C2] PKRU: 55555554
[ 4384.669172][    C2] Call Trace:
[ 4384.669174][    C2]  <TASK>
[ 4384.669176][ C2] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4384.669181][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4384.669184][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4384.669188][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4384.669191][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4384.669196][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4384.669199][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4384.669202][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4384.669204][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4384.669210][ C2] xa_store (lib/xarray.c:1734) 
[ 4384.669214][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4384.669217][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4384.669223][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4384.669226][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4384.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4384.669233][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4384.669236][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4384.669242][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4384.669246][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4384.669250][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4384.669254][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4384.669259][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4384.669265][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4384.669269][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4384.669273][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4384.669277][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4384.669281][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4384.669284][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4384.669287][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4384.669290][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4384.669296][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4384.669299][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4384.669304][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4384.669307][    C2] RIP: 0033:0x7f439756d93b
[ 4384.669310][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4384.669313][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4384.669316][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4384.669318][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4384.669320][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4384.669321][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4384.669323][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4402.693003][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 4402.693279][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 4402.693673][    C1] NMI backtrace for cpu 1
| [ 4402.693683][    C1] Tainted: [L]=SOFTLOCKUP
[ 4402.693685][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4402.693687][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4402.693691][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4402.693695][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4402.693697][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4402.693699][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4402.693701][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4402.693703][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4402.693705][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4402.693707][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4402.693709][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4402.693713][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4402.693714][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4402.693716][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4402.693718][    C1] PKRU: 55555554
[ 4402.693719][    C1] Call Trace:
[ 4402.693720][    C1]  <TASK>
[ 4402.693722][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4402.693725][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4402.693729][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4402.693732][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4402.693737][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4402.693740][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4402.693743][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4402.693745][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4402.693750][ C1] xa_store (lib/xarray.c:1734) 
[ 4402.693754][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4402.693757][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4402.693761][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4402.693764][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4402.693767][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4402.693771][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4402.693775][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4402.693780][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4402.693784][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4402.693788][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4402.693792][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4402.693796][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4402.693803][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4402.693806][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4402.693810][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4402.693815][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4402.693818][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4402.693822][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4402.693824][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4402.693828][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4402.693833][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4402.693837][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4402.693841][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4402.693844][    C1] RIP: 0033:0x7f439756d93b
[ 4402.693847][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4402.693849][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4402.693852][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4402.693854][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4402.693855][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4402.693857][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4402.693859][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4402.693857][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 4402.693859][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4402.693865][    C1]  </TASK>
| [ 4402.694681][    C3] Tainted: [L]=SOFTLOCKUP
[ 4402.694683][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4402.694685][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4402.694690][ C3] Code: 00 00 fc ff df 49 01 c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 <8b> 45 00 89 44 24 40 85 c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	fc                   	cld
   3:	ff                   	lcall  (bad)
   4:	df 49 01             	fisttps 0x1(%rcx)
   7:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   b:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
  11:	48 89 ef             	mov    %rbp,%rdi
  14:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b876
  19:	41 0f b6 06          	movzbl (%r14),%eax
  1d:	41 38 c5             	cmp    %al,%r13b
  20:	7c 08                	jl     0x2a
  22:	84 c0                	test   %al,%al
  24:	0f 85 8d 07 00 00    	jne    0x7b7
  2a:*	8b 45 00             	mov    0x0(%rbp),%eax		<-- trapping instruction
  2d:	89 44 24 40          	mov    %eax,0x40(%rsp)
  31:	85 c0                	test   %eax,%eax
  33:	0f 85 6e 01 00 00    	jne    0x1a7
  39:	48 89 ef             	mov    %rbp,%rdi
  3c:	be                   	.byte 0xbe
  3d:	04 00                	add    $0x0,%al
	...

Code starting with the faulting instruction
===========================================
   0:	8b 45 00             	mov    0x0(%rbp),%eax
   3:	89 44 24 40          	mov    %eax,0x40(%rsp)
   7:	85 c0                	test   %eax,%eax
   9:	0f 85 6e 01 00 00    	jne    0x17d
   f:	48 89 ef             	mov    %rbp,%rdi
  12:	be                   	.byte 0xbe
  13:	04 00                	add    $0x0,%al
	...
[ 4402.694693][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000246
[ 4402.694696][    C3] RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4402.694698][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4402.694700][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4402.694702][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4402.694705][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4402.694707][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4402.694709][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4402.694713][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4402.694715][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4402.694717][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4402.694719][    C3] PKRU: 55555554
[ 4402.694720][    C3] Call Trace:
[ 4402.694721][    C3]  <IRQ>
[ 4402.694722][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4402.694728][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4402.694732][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4402.694735][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4402.694738][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4402.694743][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4402.694747][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4402.694750][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4402.694753][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4402.694757][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4402.694760][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4402.694762][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4402.694765][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4402.694770][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4402.694773][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4402.694776][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4402.694779][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4402.694784][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4402.694788][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4402.694793][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4402.694796][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4402.694802][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4402.694807][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4402.694810][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4402.694813][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4402.694816][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4402.694819][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4402.694821][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4402.694826][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4402.694829][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4402.694831][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4402.694836][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4402.694839][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4402.694843][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4402.694845][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4402.694849][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4402.694852][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4402.694857][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4402.694861][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4402.694864][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4402.694869][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4402.694873][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4402.694876][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4402.694881][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4402.694885][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4402.694890][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4402.694894][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4402.694897][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4402.694900][    C3]  </IRQ>
[ 4402.694901][    C3]  <TASK>
[ 4402.694903][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4402.694907][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4402.694910][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4402.694913][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4402.694915][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4402.694917][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4402.694919][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4402.694921][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4402.694923][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4402.694927][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4402.694932][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4402.694938][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4402.694941][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4402.694945][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4402.694948][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4402.694953][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4402.694955][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4402.694960][ C3] xas_alloc (lib/xarray.c:378) 
[ 4402.694964][ C3] xas_create (lib/xarray.c:685) 
[ 4402.694970][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4402.694974][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4402.694978][ C3] __xa_store (lib/xarray.c:1703) 
[ 4402.694981][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4402.694986][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4402.694989][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4402.694991][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4402.694996][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4402.695000][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4402.695003][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4402.695008][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4402.695010][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4402.695013][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4402.695017][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4402.695020][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4402.695024][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4402.695028][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4402.695033][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4402.695036][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4402.695041][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4402.695047][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4402.695051][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4402.695056][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4402.695061][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4402.695065][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4402.695068][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4402.695071][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4402.695074][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4402.695080][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4402.695084][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4402.695088][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4402.695092][    C3] RIP: 0033:0x7f439756d93b
[ 4402.695097][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4402.695099][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4402.695102][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4402.695104][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4402.695106][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4402.695108][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4402.695109][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4408.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4408.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4408.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 4408.656136][    C0] Tainted: [L]=SOFTLOCKUP
[ 4408.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4408.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4408.656144][ C0] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 4408.656147][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4408.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4408.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4408.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4408.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4408.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4408.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4408.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4408.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4408.656168][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4408.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4408.656171][    C0] PKRU: 55555554
[ 4408.656173][    C0] Call Trace:
[ 4408.656174][    C0]  <TASK>
[ 4408.656176][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4408.656180][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4408.656184][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4408.656187][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4408.656191][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4408.656194][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4408.656197][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4408.656200][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4408.656205][ C0] xa_store (lib/xarray.c:1734) 
[ 4408.656209][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4408.656212][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4408.656217][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4408.656219][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4408.656222][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4408.656227][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4408.656230][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4408.656235][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4408.656239][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4408.656244][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4408.656247][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4408.656252][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4408.656258][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4408.656262][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4408.656266][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4408.656270][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4408.656274][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4408.656277][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4408.656280][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4408.656284][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4408.656289][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4408.656293][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4408.656297][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4408.656300][    C0] RIP: 0033:0x7f439756d93b
[ 4408.656302][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4408.656305][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4408.656308][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4408.656310][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4408.656312][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4408.656314][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4408.656316][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4412.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4412.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4412.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 4412.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 4412.669139][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4412.669141][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4412.669146][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 4412.669149][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4412.669152][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4412.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4412.669156][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4412.669158][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4412.669160][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4412.669162][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4412.669165][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4412.669168][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4412.669170][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4412.669172][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4412.669174][    C2] PKRU: 55555554
[ 4412.669175][    C2] Call Trace:
[ 4412.669177][    C2]  <TASK>
[ 4412.669179][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4412.669183][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4412.669187][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4412.669190][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4412.669195][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4412.669198][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4412.669201][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4412.669203][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4412.669209][ C2] xa_store (lib/xarray.c:1734) 
[ 4412.669213][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4412.669216][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4412.669221][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4412.669224][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4412.669227][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4412.669231][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4412.669235][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4412.669240][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4412.669244][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4412.669248][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4412.669252][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4412.669256][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4412.669263][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4412.669266][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4412.669270][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4412.669274][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4412.669278][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4412.669282][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4412.669285][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4412.669288][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4412.669293][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4412.669297][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4412.669302][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4412.669305][    C2] RIP: 0033:0x7f439756d93b
[ 4412.669307][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4412.669310][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4412.669313][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4412.669315][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4412.669317][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4412.669319][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4412.669321][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4428.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4428.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4428.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 4428.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 4428.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4428.669140][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4428.669145][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4428.669148][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4428.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4428.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4428.669155][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4428.669157][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4428.669159][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4428.669161][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4428.669163][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4428.669167][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4428.669169][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4428.669170][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4428.669172][    C1] PKRU: 55555554
[ 4428.669173][    C1] Call Trace:
[ 4428.669175][    C1]  <TASK>
[ 4428.669177][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4428.669181][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4428.669184][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4428.669187][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4428.669192][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4428.669195][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4428.669198][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4428.669201][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4428.669206][ C1] xa_store (lib/xarray.c:1734) 
[ 4428.669209][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4428.669213][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4428.669218][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4428.669221][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4428.669223][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4428.669228][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4428.669231][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4428.669237][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4428.669241][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4428.669245][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4428.669249][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4428.669254][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4428.669260][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4428.669264][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4428.669268][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4428.669272][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4428.669276][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4428.669279][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4428.669282][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4428.669286][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4428.669291][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4428.669295][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4428.669299][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4428.669302][    C1] RIP: 0033:0x7f439756d93b
[ 4428.669305][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4428.669308][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4428.669311][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4428.669313][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4428.669315][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4428.669317][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4428.669319][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4428.670133][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4428.670141][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4428.670145][ C3] softirqs last disabled at (0): 0x0 
| [ 4428.670157][    C3] Tainted: [L]=SOFTLOCKUP
[ 4428.670158][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4428.670161][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4428.670168][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4428.670171][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4428.670174][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4428.670176][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4428.670178][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4428.670180][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4428.670182][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4428.670184][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4428.670186][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4428.670190][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4428.670192][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4428.670194][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4428.670196][    C3] PKRU: 55555554
[ 4428.670197][    C3] Call Trace:
[ 4428.670202][    C3]  <IRQ>
[ 4428.670204][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4428.670209][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4428.670214][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4428.670218][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4428.670223][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4428.670227][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4428.670231][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4428.670235][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4428.670238][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4428.670242][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4428.670244][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4428.670247][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4428.670250][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4428.670255][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4428.670259][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4428.670263][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4428.670266][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4428.670271][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4428.670276][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4428.670281][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4428.670286][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4428.670292][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4428.670298][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4428.670301][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4428.670304][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4428.670307][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4428.670310][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4428.670313][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4428.670319][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4428.670322][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4428.670325][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4428.670330][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4428.670334][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4428.670338][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4428.670341][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4428.670344][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4428.670348][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4428.670352][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4428.670357][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4428.670359][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4428.670365][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4428.670368][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4428.670372][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4428.670376][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4428.670381][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4428.670387][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4428.670391][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4428.670394][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4428.670398][    C3]  </IRQ>
[ 4428.670399][    C3]  <TASK>
[ 4428.670401][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4428.670406][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4428.670409][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4428.670412][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4428.670415][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4428.670417][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4428.670420][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4428.670421][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4428.670423][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4428.670427][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4428.670433][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4428.670438][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4428.670442][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4428.670447][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4428.670449][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4428.670454][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4428.670457][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4428.670462][ C3] xas_alloc (lib/xarray.c:378) 
[ 4428.670466][ C3] xas_create (lib/xarray.c:685) 
[ 4428.670473][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4428.670477][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4428.670481][ C3] __xa_store (lib/xarray.c:1703) 
[ 4428.670485][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4428.670490][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4428.670492][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4428.670495][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4428.670500][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4428.670504][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4428.670507][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4428.670512][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4428.670515][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4428.670518][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4428.670522][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4428.670525][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4428.670530][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4428.670534][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4428.670538][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4428.670542][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4428.670547][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4428.670555][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4428.670559][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4428.670564][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4428.670569][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4428.670572][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4428.670576][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4428.670578][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4428.670582][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4428.670588][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4428.670592][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4428.670597][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4428.670600][    C3] RIP: 0033:0x7f439756d93b
[ 4428.670604][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4428.670607][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4428.670610][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4428.670612][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4428.670614][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4428.670615][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4428.670617][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4436.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4436.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4436.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 4436.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 4436.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4436.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4436.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4436.656147][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4436.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4436.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4436.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4436.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4436.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4436.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4436.656162][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4436.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4436.656168][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4436.656169][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4436.656171][    C0] PKRU: 55555554
[ 4436.656173][    C0] Call Trace:
[ 4436.656174][    C0]  <TASK>
[ 4436.656176][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4436.656180][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4436.656184][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4436.656187][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4436.656192][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4436.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4436.656199][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4436.656202][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4436.656207][ C0] xa_store (lib/xarray.c:1734) 
[ 4436.656211][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4436.656215][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4436.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4436.656222][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4436.656225][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4436.656230][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4436.656234][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4436.656239][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4436.656243][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4436.656247][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4436.656251][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4436.656255][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4436.656261][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4436.656265][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4436.656269][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4436.656274][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4436.656277][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4436.656281][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4436.656283][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4436.656287][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4436.656292][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4436.656296][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4436.656300][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4436.656303][    C0] RIP: 0033:0x7f439756d93b
[ 4436.656305][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4436.656308][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4436.656311][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4436.656313][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4436.656315][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4436.656316][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4436.656318][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4440.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4440.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4440.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 4440.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 4440.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4440.669139][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4440.669144][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4440.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4440.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4440.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4440.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4440.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4440.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4440.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4440.669162][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4440.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4440.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4440.669169][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4440.669171][    C2] PKRU: 55555554
[ 4440.669173][    C2] Call Trace:
[ 4440.669174][    C2]  <TASK>
[ 4440.669177][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4440.669180][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4440.669184][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4440.669187][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4440.669192][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4440.669195][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4440.669198][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4440.669201][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4440.669206][ C2] xa_store (lib/xarray.c:1734) 
[ 4440.669210][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4440.669213][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4440.669218][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4440.669221][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4440.669224][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4440.669229][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4440.669233][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4440.669238][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4440.669242][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4440.669246][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4440.669251][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4440.669255][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4440.669262][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4440.669266][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4440.669270][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4440.669274][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4440.669277][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4440.669281][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4440.669284][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4440.669287][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4440.669292][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4440.669296][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4440.669300][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4440.669304][    C2] RIP: 0033:0x7f439756d93b
[ 4440.669306][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4440.669309][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4440.669312][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4440.669314][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4440.669316][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4440.669318][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4440.669320][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4456.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4456.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4456.669129][ C1] softirqs last disabled at (0): 0x0 
| [ 4456.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 4456.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4456.669141][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4456.669145][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4456.669148][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4456.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4456.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4456.669155][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4456.669157][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4456.669159][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4456.669161][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4456.669164][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4456.669167][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4456.669169][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4456.669171][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4456.669173][    C1] PKRU: 55555554
[ 4456.669174][    C1] Call Trace:
[ 4456.669176][    C1]  <TASK>
[ 4456.669178][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4456.669182][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4456.669186][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4456.669189][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4456.669194][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4456.669197][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4456.669200][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4456.669203][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4456.669208][ C1] xa_store (lib/xarray.c:1734) 
[ 4456.669212][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4456.669216][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4456.669221][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4456.669224][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4456.669227][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4456.669231][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4456.669234][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4456.669240][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4456.669244][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4456.669248][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4456.669252][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4456.669257][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4456.669263][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4456.669266][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4456.669271][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4456.669275][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4456.669278][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4456.669282][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4456.669285][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4456.669288][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4456.669294][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4456.669297][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4456.669302][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4456.669305][    C1] RIP: 0033:0x7f439756d93b
[ 4456.669307][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4456.669310][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4456.669313][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4456.669315][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4456.669317][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4456.669318][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4456.669320][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4456.670132][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4456.670140][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4456.670143][ C3] softirqs last disabled at (0): 0x0 
| [ 4456.670154][    C3] Tainted: [L]=SOFTLOCKUP
[ 4456.670156][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4456.670158][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4456.670166][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4456.670169][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4456.670172][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4456.670175][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4456.670177][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4456.670179][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4456.670181][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4456.670183][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4456.670186][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4456.670190][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4456.670192][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4456.670194][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4456.670196][    C3] PKRU: 55555554
[ 4456.670197][    C3] Call Trace:
[ 4456.670200][    C3]  <IRQ>
[ 4456.670202][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4456.670207][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4456.670213][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4456.670216][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4456.670222][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4456.670226][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4456.670229][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4456.670233][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4456.670236][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4456.670240][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4456.670242][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4456.670245][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4456.670248][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4456.670253][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4456.670258][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4456.670261][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4456.670265][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4456.670270][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4456.670274][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4456.670279][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4456.670283][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4456.670289][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4456.670294][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4456.670297][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4456.670300][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4456.670304][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4456.670307][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4456.670309][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4456.670315][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4456.670318][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4456.670322][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4456.670326][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4456.670331][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4456.670334][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4456.670337][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4456.670340][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4456.670344][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4456.670348][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4456.670353][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4456.670356][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4456.670361][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4456.670365][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4456.670369][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4456.670373][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4456.670378][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4456.670384][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4456.670387][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4456.670391][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4456.670395][    C3]  </IRQ>
[ 4456.670396][    C3]  <TASK>
[ 4456.670398][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4456.670403][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4456.670406][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4456.670409][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4456.670412][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4456.670414][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4456.670416][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4456.670418][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4456.670420][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4456.670424][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4456.670430][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4456.670436][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4456.670439][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4456.670444][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4456.670447][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4456.670451][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4456.670453][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4456.670458][ C3] xas_alloc (lib/xarray.c:378) 
[ 4456.670463][ C3] xas_create (lib/xarray.c:685) 
[ 4456.670469][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4456.670473][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4456.670477][ C3] __xa_store (lib/xarray.c:1703) 
[ 4456.670481][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4456.670486][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4456.670489][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4456.670491][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4456.670496][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4456.670500][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4456.670503][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4456.670509][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4456.670512][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4456.670515][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4456.670519][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4456.670522][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4456.670527][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4456.670531][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4456.670535][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4456.670539][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4456.670543][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4456.670551][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4456.670555][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4456.670560][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4456.670564][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4456.670568][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4456.670571][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4456.670574][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4456.670577][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4456.670583][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4456.670587][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4456.670592][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4456.670596][    C3] RIP: 0033:0x7f439756d93b
[ 4456.670600][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4456.670602][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4456.670605][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4456.670607][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4456.670609][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4456.670611][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4456.670613][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4464.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4464.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4464.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 4464.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 4464.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4464.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:104 kernel/locking/qspinlock.c:141) 
[ 4464.656145][ C0] Code: c6 41 83 c5 03 be 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08 84 c0 0f 85 8d 07 00 00 8b 45 00 89 44 24 40 <85> c0 0f 85 6e 01 00 00 48 89 ef be 04 00 00 00 e8 60 b8 c7 fd be
All code
========
   0:	c6 41 83 c5          	movb   $0xc5,-0x7d(%rcx)
   4:	03 be 04 00 00 00    	add    0x4(%rsi),%edi
   a:	48 89 ef             	mov    %rbp,%rdi
   d:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86f
  12:	41 0f b6 06          	movzbl (%r14),%eax
  16:	41 38 c5             	cmp    %al,%r13b
  19:	7c 08                	jl     0x23
  1b:	84 c0                	test   %al,%al
  1d:	0f 85 8d 07 00 00    	jne    0x7b0
  23:	8b 45 00             	mov    0x0(%rbp),%eax
  26:	89 44 24 40          	mov    %eax,0x40(%rsp)
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 6e 01 00 00    	jne    0x1a0
  32:	48 89 ef             	mov    %rbp,%rdi
  35:	be 04 00 00 00       	mov    $0x4,%esi
  3a:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b89f
  3f:	be                   	.byte 0xbe

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 6e 01 00 00    	jne    0x176
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	be 04 00 00 00       	mov    $0x4,%esi
  10:	e8 60 b8 c7 fd       	call   0xfffffffffdc7b875
  15:	be                   	.byte 0xbe
[ 4464.656148][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000246
[ 4464.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4464.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4464.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4464.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4464.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4464.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4464.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4464.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4464.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4464.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4464.656172][    C0] PKRU: 55555554
[ 4464.656174][    C0] Call Trace:
[ 4464.656175][    C0]  <TASK>
[ 4464.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4464.656181][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4464.656185][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4464.656188][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4464.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4464.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4464.656199][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4464.656202][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4464.656207][ C0] xa_store (lib/xarray.c:1734) 
[ 4464.656211][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4464.656215][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4464.656220][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4464.656223][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4464.656225][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4464.656230][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4464.656233][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4464.656238][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4464.656243][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4464.656247][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4464.656251][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4464.656256][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4464.656262][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4464.656266][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4464.656270][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4464.656274][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4464.656278][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4464.656281][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4464.656284][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4464.656288][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4464.656293][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4464.656297][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4464.656301][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4464.656304][    C0] RIP: 0033:0x7f439756d93b
[ 4464.656307][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4464.656310][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4464.656313][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4464.656315][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4464.656317][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4464.656318][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4464.656320][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4468.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4468.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4468.669128][ C2] softirqs last disabled at (0): 0x0 
| [ 4468.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 4468.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4468.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4468.669144][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4468.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4468.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4468.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4468.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4468.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4468.669159][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4468.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4468.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4468.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4468.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4468.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4468.669172][    C2] PKRU: 55555554
[ 4468.669173][    C2] Call Trace:
[ 4468.669175][    C2]  <TASK>
[ 4468.669177][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4468.669181][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4468.669185][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4468.669188][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4468.669193][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4468.669196][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4468.669199][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4468.669202][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4468.669207][ C2] xa_store (lib/xarray.c:1734) 
[ 4468.669212][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4468.669215][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4468.669220][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4468.669223][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4468.669226][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4468.669231][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4468.669234][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4468.669239][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4468.669243][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4468.669248][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4468.669252][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4468.669257][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4468.669263][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4468.669267][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4468.669271][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4468.669275][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4468.669279][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4468.669282][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4468.669285][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4468.669289][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4468.669294][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4468.669298][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4468.669302][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4468.669305][    C2] RIP: 0033:0x7f439756d93b
[ 4468.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4468.669311][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4468.669314][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4468.669316][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4468.669318][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4468.669320][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4468.669321][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4480.706872][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 4480.707141][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 4480.707536][    C1] NMI backtrace for cpu 1
| [ 4480.707547][    C1] Tainted: [L]=SOFTLOCKUP
[ 4480.707548][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4480.707550][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4480.707556][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4480.707559][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4480.707562][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4480.707564][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4480.707566][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4480.707568][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4480.707571][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4480.707572][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4480.707575][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4480.707578][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4480.707580][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4480.707581][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4480.707583][    C1] PKRU: 55555554
[ 4480.707584][    C1] Call Trace:
[ 4480.707586][    C1]  <TASK>
[ 4480.707588][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4480.707592][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4480.707596][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4480.707599][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4480.707604][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4480.707607][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4480.707610][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4480.707613][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4480.707618][ C1] xa_store (lib/xarray.c:1734) 
[ 4480.707622][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4480.707625][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4480.707630][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4480.707633][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4480.707635][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4480.707640][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4480.707643][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4480.707648][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4480.707652][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4480.707656][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4480.707660][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4480.707664][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4480.707670][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4480.707674][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4480.707678][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4480.707682][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4480.707686][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4480.707690][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4480.707692][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4480.707696][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4480.707701][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4480.707705][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4480.707709][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4480.707712][    C1] RIP: 0033:0x7f439756d93b
[ 4480.707715][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4480.707717][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4480.707720][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4480.707722][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4480.707724][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4480.707726][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4480.707728][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4480.707726][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 4480.707728][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4480.707734][    C1]  </TASK>
| [ 4480.708545][    C3] Tainted: [L]=SOFTLOCKUP
[ 4480.708547][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4480.708549][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4480.708554][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4480.708557][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4480.708560][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4480.708562][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4480.708564][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4480.708566][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4480.708568][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4480.708570][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4480.708573][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4480.708577][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4480.708579][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4480.708580][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4480.708582][    C3] PKRU: 55555554
[ 4480.708584][    C3] Call Trace:
[ 4480.708585][    C3]  <IRQ>
[ 4480.708587][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4480.708592][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4480.708596][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4480.708600][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4480.708603][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4480.708607][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4480.708611][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4480.708614][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4480.708617][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4480.708620][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4480.708623][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4480.708626][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4480.708628][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4480.708634][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4480.708637][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4480.708640][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4480.708643][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4480.708648][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4480.708652][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4480.708657][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4480.708660][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4480.708666][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4480.708671][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4480.708673][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4480.708676][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4480.708679][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4480.708683][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4480.708685][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4480.708691][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4480.708694][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4480.708697][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4480.708701][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4480.708705][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4480.708709][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4480.708712][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4480.708715][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4480.708719][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4480.708723][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4480.708727][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4480.708730][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4480.708735][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4480.708739][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4480.708742][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4480.708747][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4480.708751][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4480.708757][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4480.708760][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4480.708763][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4480.708766][    C3]  </IRQ>
[ 4480.708767][    C3]  <TASK>
[ 4480.708769][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4480.708772][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4480.708775][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4480.708778][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4480.708780][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4480.708782][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4480.708784][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4480.708785][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4480.708787][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4480.708791][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4480.708796][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4480.708801][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4480.708804][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4480.708809][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4480.708811][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4480.708815][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4480.708818][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4480.708822][ C3] xas_alloc (lib/xarray.c:378) 
[ 4480.708827][ C3] xas_create (lib/xarray.c:685) 
[ 4480.708832][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4480.708836][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4480.708840][ C3] __xa_store (lib/xarray.c:1703) 
[ 4480.708843][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4480.708848][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4480.708851][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4480.708854][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4480.708858][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4480.708862][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4480.708865][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4480.708869][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4480.708872][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4480.708875][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4480.708878][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4480.708882][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4480.708886][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4480.708890][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4480.708894][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4480.708898][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4480.708902][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4480.708908][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4480.708912][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4480.708917][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4480.708922][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4480.708925][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4480.708928][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4480.708931][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4480.708934][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4480.708940][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4480.708943][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4480.708948][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4480.708950][    C3] RIP: 0033:0x7f439756d93b
[ 4480.708955][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4480.708957][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4480.708960][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4480.708962][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4480.708963][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4480.708965][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4480.708966][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4492.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4492.656125][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4492.656129][ C0] softirqs last disabled at (0): 0x0 
| [ 4492.656138][    C0] Tainted: [L]=SOFTLOCKUP
[ 4492.656139][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4492.656141][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4492.656145][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4492.656149][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4492.656151][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4492.656153][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4492.656155][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4492.656157][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4492.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4492.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4492.656164][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4492.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4492.656170][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4492.656171][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4492.656173][    C0] PKRU: 55555554
[ 4492.656175][    C0] Call Trace:
[ 4492.656176][    C0]  <TASK>
[ 4492.656179][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4492.656183][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4492.656187][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4492.656190][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4492.656195][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4492.656198][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4492.656201][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4492.656204][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4492.656209][ C0] xa_store (lib/xarray.c:1734) 
[ 4492.656213][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4492.656216][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4492.656221][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4492.656224][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4492.656226][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4492.656231][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4492.656235][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4492.656240][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4492.656244][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4492.656249][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4492.656253][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4492.656257][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4492.656264][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4492.656267][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4492.656271][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4492.656276][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4492.656279][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4492.656283][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4492.656286][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4492.656290][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4492.656295][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4492.656298][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4492.656303][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4492.656306][    C0] RIP: 0033:0x7f439756d93b
[ 4492.656308][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4492.656311][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4492.656314][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4492.656316][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4492.656318][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4492.656320][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4492.656322][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4496.669119][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4496.669124][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4496.669127][ C2] softirqs last disabled at (0): 0x0 
| [ 4496.669136][    C2] Tainted: [L]=SOFTLOCKUP
[ 4496.669137][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4496.669139][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4496.669144][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4496.669147][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4496.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4496.669152][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4496.669154][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4496.669156][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4496.669158][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4496.669160][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4496.669163][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4496.669166][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4496.669168][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4496.669170][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4496.669171][    C2] PKRU: 55555554
[ 4496.669173][    C2] Call Trace:
[ 4496.669174][    C2]  <TASK>
[ 4496.669177][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4496.669180][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4496.669184][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4496.669187][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4496.669192][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4496.669195][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4496.669198][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4496.669201][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4496.669206][ C2] xa_store (lib/xarray.c:1734) 
[ 4496.669209][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4496.669213][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4496.669218][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4496.669220][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4496.669223][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4496.669228][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4496.669231][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4496.669237][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4496.669241][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4496.669245][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4496.669249][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4496.669253][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4496.669259][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4496.669263][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4496.669267][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4496.669271][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4496.669275][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4496.669278][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4496.669281][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4496.669285][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4496.669290][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4496.669294][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4496.669298][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4496.669301][    C2] RIP: 0033:0x7f439756d93b
[ 4496.669304][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4496.669306][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4496.669309][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4496.669311][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4496.669313][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4496.669315][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4496.669317][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4508.669119][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4508.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4508.669128][ C1] softirqs last disabled at (0): 0x0 
| [ 4508.669137][    C1] Tainted: [L]=SOFTLOCKUP
[ 4508.669138][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4508.669140][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4508.669145][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4508.669149][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4508.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4508.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4508.669156][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4508.669158][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4508.669160][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4508.669162][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4508.669164][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4508.669167][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4508.669169][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4508.669171][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4508.669173][    C1] PKRU: 55555554
[ 4508.669174][    C1] Call Trace:
[ 4508.669176][    C1]  <TASK>
[ 4508.669178][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4508.669182][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4508.669185][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4508.669189][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4508.669194][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4508.669197][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4508.669199][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4508.669202][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4508.669208][ C1] xa_store (lib/xarray.c:1734) 
[ 4508.669212][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4508.669215][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4508.669219][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4508.669222][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4508.669225][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4508.669230][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4508.669233][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4508.669238][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4508.669242][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4508.669247][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4508.669251][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4508.669255][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4508.669261][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4508.669265][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4508.669269][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4508.669274][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4508.669277][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4508.669281][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4508.669284][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4508.669287][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4508.669292][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4508.669296][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4508.669300][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4508.669303][    C1] RIP: 0033:0x7f439756d93b
[ 4508.669307][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4508.669310][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4508.669312][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4508.669314][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4508.669317][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4508.669318][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4508.669320][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4508.670134][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4508.670143][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4508.670146][ C3] softirqs last disabled at (0): 0x0 
| [ 4508.670158][    C3] Tainted: [L]=SOFTLOCKUP
[ 4508.670159][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4508.670162][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4508.670170][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4508.670173][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4508.670176][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4508.670179][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4508.670180][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4508.670182][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4508.670184][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4508.670186][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4508.670188][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4508.670192][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4508.670194][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4508.670196][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4508.670197][    C3] PKRU: 55555554
[ 4508.670199][    C3] Call Trace:
[ 4508.670202][    C3]  <IRQ>
[ 4508.670204][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4508.670210][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4508.670215][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4508.670218][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4508.670222][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4508.670227][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4508.670230][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4508.670235][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4508.670238][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4508.670241][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4508.670244][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4508.670246][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4508.670249][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4508.670254][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4508.670259][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4508.670262][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4508.670266][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4508.670271][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4508.670275][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4508.670280][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4508.670285][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4508.670291][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4508.670297][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4508.670300][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4508.670303][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4508.670306][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4508.670310][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4508.670313][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4508.670318][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4508.670321][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4508.670324][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4508.670329][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4508.670334][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4508.670337][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4508.670340][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4508.670343][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4508.670347][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4508.670351][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4508.670356][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4508.670359][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4508.670364][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4508.670368][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4508.670371][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4508.670376][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4508.670381][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4508.670387][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4508.670391][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4508.670394][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4508.670398][    C3]  </IRQ>
[ 4508.670399][    C3]  <TASK>
[ 4508.670400][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4508.670406][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4508.670409][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4508.670412][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4508.670415][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4508.670417][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4508.670419][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4508.670421][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4508.670423][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4508.670427][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4508.670432][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4508.670438][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4508.670441][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4508.670446][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4508.670449][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4508.670453][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4508.670456][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4508.670461][ C3] xas_alloc (lib/xarray.c:378) 
[ 4508.670466][ C3] xas_create (lib/xarray.c:685) 
[ 4508.670472][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4508.670476][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4508.670480][ C3] __xa_store (lib/xarray.c:1703) 
[ 4508.670484][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4508.670489][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4508.670492][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4508.670494][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4508.670499][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4508.670503][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4508.670507][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4508.670512][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4508.670515][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4508.670517][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4508.670521][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4508.670524][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4508.670529][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4508.670533][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4508.670537][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4508.670541][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4508.670545][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4508.670553][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4508.670557][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4508.670562][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4508.670567][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4508.670570][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4508.670573][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4508.670576][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4508.670579][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4508.670585][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4508.670589][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4508.670594][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4508.670597][    C3] RIP: 0033:0x7f439756d93b
[ 4508.670601][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4508.670604][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4508.670607][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4508.670609][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4508.670611][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4508.670613][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4508.670615][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4520.656120][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4520.656126][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4520.656129][ C0] softirqs last disabled at (0): 0x0 
| [ 4520.656138][    C0] Tainted: [L]=SOFTLOCKUP
[ 4520.656140][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4520.656141][ C0] RIP: 0010:kasan_check_range (mm/kasan/generic.c:174 mm/kasan/generic.c:189) 
[ 4520.656145][ C0] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 5e 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <72> 14 eb 26 cc cc cc 48 b8 ff ff ff ff ff ff ff fe 48 39 c7 77 23
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	66 0f 1f 00          	nopw   (%rax)
  13:	48 85 f6             	test   %rsi,%rsi
  16:	0f 84 5e 01 00 00    	je     0x17a
  1c:	48 89 f8             	mov    %rdi,%rax
  1f:	41 54                	push   %r12
  21:	44 0f b6 c2          	movzbl %dl,%r8d
  25:	48 01 f0             	add    %rsi,%rax
  28:	55                   	push   %rbp
  29:	53                   	push   %rbx
  2a:*	72 14                	jb     0x40		<-- trapping instruction
  2c:	eb 26                	jmp    0x54
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
  38:	ff ff fe 
  3b:	48 39 c7             	cmp    %rax,%rdi
  3e:	77 23                	ja     0x63

Code starting with the faulting instruction
===========================================
   0:	72 14                	jb     0x16
   2:	eb 26                	jmp    0x2a
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	48 b8 ff ff ff ff ff 	movabs $0xfeffffffffffffff,%rax
   e:	ff ff fe 
  11:	48 39 c7             	cmp    %rax,%rdi
  14:	77 23                	ja     0x39
[ 4520.656148][    C0] RSP: 0018:ffffc900034c79f8 EFLAGS: 00000282
[ 4520.656151][    C0] RAX: ffffffffbbee5c04 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4520.656153][    C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4520.656155][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4520.656157][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4520.656159][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4520.656161][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4520.656164][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4520.656167][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4520.656169][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4520.656171][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4520.656173][    C0] PKRU: 55555554
[ 4520.656174][    C0] Call Trace:
[ 4520.656175][    C0]  <TASK>
[ 4520.656178][ C0] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4520.656183][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4520.656186][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4520.656190][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4520.656193][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4520.656198][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4520.656201][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4520.656204][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4520.656207][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4520.656212][ C0] xa_store (lib/xarray.c:1734) 
[ 4520.656216][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4520.656220][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4520.656225][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4520.656227][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4520.656230][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4520.656235][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4520.656238][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4520.656243][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4520.656247][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4520.656252][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4520.656256][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4520.656261][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4520.656267][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4520.656270][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4520.656275][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4520.656279][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4520.656282][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4520.656286][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4520.656289][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4520.656292][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4520.656297][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4520.656302][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4520.656306][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4520.656309][    C0] RIP: 0033:0x7f439756d93b
[ 4520.656312][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4520.656315][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4520.656317][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4520.656319][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4520.656321][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4520.656323][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4520.656325][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4524.669120][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4524.669125][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4524.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 4524.669137][    C2] Tainted: [L]=SOFTLOCKUP
[ 4524.669138][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4524.669140][ C2] RIP: 0010:queued_spin_lock_slowpath (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4524.669145][ C2] Code: 00 49 89 fe 49 89 fd 4c 8d 7c 24 40 bb 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 <be> 04 00 00 00 48 89 ef e8 5d b8 c7 fd 41 0f b6 06 41 38 c5 7c 08
All code
========
   0:	00 49 89             	add    %cl,-0x77(%rcx)
   3:	fe 49 89             	decb   -0x77(%rcx)
   6:	fd                   	std
   7:	4c 8d 7c 24 40       	lea    0x40(%rsp),%r15
   c:	bb 01 00 00 00       	mov    $0x1,%ebx
  11:	49 c1 ee 03          	shr    $0x3,%r14
  15:	41 83 e5 07          	and    $0x7,%r13d
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df 
  23:	49 01 c6             	add    %rax,%r14
  26:	41 83 c5 03          	add    $0x3,%r13d
  2a:*	be 04 00 00 00       	mov    $0x4,%esi		<-- trapping instruction
  2f:	48 89 ef             	mov    %rbp,%rdi
  32:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b894
  37:	41 0f b6 06          	movzbl (%r14),%eax
  3b:	41 38 c5             	cmp    %al,%r13b
  3e:	7c 08                	jl     0x48

Code starting with the faulting instruction
===========================================
   0:	be 04 00 00 00       	mov    $0x4,%esi
   5:	48 89 ef             	mov    %rbp,%rdi
   8:	e8 5d b8 c7 fd       	call   0xfffffffffdc7b86a
   d:	41 0f b6 06          	movzbl (%r14),%eax
  11:	41 38 c5             	cmp    %al,%r13b
  14:	7c 08                	jl     0x1e
[ 4524.669148][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4524.669150][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4524.669153][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4524.669155][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4524.669157][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4524.669159][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4524.669161][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4524.669164][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4524.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4524.669169][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4524.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4524.669173][    C2] PKRU: 55555554
[ 4524.669174][    C2] Call Trace:
[ 4524.669176][    C2]  <TASK>
[ 4524.669178][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4524.669182][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4524.669186][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4524.669189][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4524.669194][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4524.669197][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4524.669200][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4524.669203][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4524.669208][ C2] xa_store (lib/xarray.c:1734) 
[ 4524.669212][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4524.669215][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4524.669220][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4524.669223][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4524.669226][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4524.669231][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4524.669234][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4524.669240][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4524.669243][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4524.669248][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4524.669252][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4524.669257][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4524.669263][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4524.669267][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4524.669271][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4524.669275][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4524.669279][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4524.669282][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4524.669285][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4524.669289][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4524.669294][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4524.669298][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4524.669302][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4524.669305][    C2] RIP: 0033:0x7f439756d93b
[ 4524.669308][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4524.669311][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4524.669314][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4524.669316][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4524.669318][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4524.669319][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4524.669321][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4536.669120][ C1] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4536.669125][ C1] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4536.669129][ C1] softirqs last disabled at (0): 0x0 
| [ 4536.669138][    C1] Tainted: [L]=SOFTLOCKUP
[ 4536.669139][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4536.669141][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4536.669145][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4536.669148][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4536.669151][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4536.669153][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4536.669155][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4536.669157][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4536.669159][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4536.669161][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4536.669164][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4536.669167][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4536.669170][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4536.669172][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4536.669174][    C1] PKRU: 55555554
[ 4536.669175][    C1] Call Trace:
[ 4536.669177][    C1]  <TASK>
[ 4536.669179][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4536.669183][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4536.669186][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4536.669189][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4536.669195][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4536.669198][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4536.669200][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4536.669203][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4536.669209][ C1] xa_store (lib/xarray.c:1734) 
[ 4536.669213][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4536.669216][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4536.669221][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4536.669225][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4536.669227][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4536.669232][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4536.669235][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4536.669241][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4536.669245][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4536.669249][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4536.669253][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4536.669258][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4536.669264][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4536.669267][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4536.669271][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4536.669275][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4536.669279][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4536.669283][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4536.669285][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4536.669289][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4536.669294][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4536.669298][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4536.669302][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4536.669305][    C1] RIP: 0033:0x7f439756d93b
[ 4536.669308][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4536.669310][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4536.669313][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4536.669315][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4536.669317][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4536.669319][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4536.669321][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4536.670133][ C3] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4536.670140][ C3] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4536.670144][ C3] softirqs last disabled at (0): 0x0 
| [ 4536.670155][    C3] Tainted: [L]=SOFTLOCKUP
[ 4536.670157][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4536.670160][ C3] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4536.670167][ C3] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4536.670170][    C3] RSP: 0018:ffffc90000270a48 EFLAGS: 00000202
[ 4536.670174][    C3] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4536.670176][    C3] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4536.670178][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4536.670180][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4536.670182][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4536.670184][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4536.670187][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4536.670191][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4536.670193][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4536.670194][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4536.670196][    C3] PKRU: 55555554
[ 4536.670197][    C3] Call Trace:
[ 4536.670201][    C3]  <IRQ>
[ 4536.670202][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4536.670208][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4536.670213][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4536.670216][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4536.670221][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4536.670225][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4536.670229][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4536.670233][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4536.670236][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4536.670240][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4536.670243][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4536.670245][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4536.670248][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4536.670254][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4536.670259][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4536.670262][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4536.670265][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4536.670271][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4536.670275][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4536.670280][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4536.670285][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4536.670291][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4536.670296][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4536.670299][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4536.670302][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4536.670305][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4536.670309][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4536.670311][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4536.670317][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4536.670320][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4536.670323][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4536.670327][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4536.670332][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4536.670335][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4536.670338][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4536.670341][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4536.670344][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4536.670348][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4536.670353][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4536.670356][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4536.670361][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4536.670365][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4536.670369][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4536.670374][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4536.670378][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4536.670384][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4536.670387][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4536.670391][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4536.670395][    C3]  </IRQ>
[ 4536.670396][    C3]  <TASK>
[ 4536.670397][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4536.670403][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4536.670406][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4536.670409][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4536.670412][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4536.670414][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4536.670416][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4536.670418][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4536.670420][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4536.670424][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4536.670430][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4536.670435][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4536.670439][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4536.670444][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4536.670447][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4536.670451][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4536.670454][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4536.670459][ C3] xas_alloc (lib/xarray.c:378) 
[ 4536.670463][ C3] xas_create (lib/xarray.c:685) 
[ 4536.670469][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4536.670474][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4536.670478][ C3] __xa_store (lib/xarray.c:1703) 
[ 4536.670482][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4536.670486][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4536.670489][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4536.670492][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4536.670497][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4536.670501][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4536.670504][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4536.670509][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4536.670512][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4536.670515][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4536.670519][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4536.670522][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4536.670527][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4536.670531][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4536.670535][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4536.670539][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4536.670543][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4536.670551][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4536.670555][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4536.670561][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4536.670565][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4536.670568][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4536.670572][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4536.670575][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4536.670578][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4536.670585][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4536.670588][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4536.670593][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4536.670596][    C3] RIP: 0033:0x7f439756d93b
[ 4536.670600][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4536.670603][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4536.670606][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4536.670608][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4536.670610][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4536.670612][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4536.670614][    C3] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4548.656119][ C0] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4548.656124][ C0] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4548.656128][ C0] softirqs last disabled at (0): 0x0 
| [ 4548.656137][    C0] Tainted: [L]=SOFTLOCKUP
[ 4548.656138][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4548.656140][ C0] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4548.656144][ C0] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4548.656147][    C0] RSP: 0018:ffffc900034c7a18 EFLAGS: 00000202
[ 4548.656150][    C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4548.656152][    C0] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4548.656154][    C0] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4548.656156][    C0] R10: ffffffffbbee5c03 R11: ffffc900034c78e0 R12: 1ffff92000698f45
[ 4548.656158][    C0] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034c7a58
[ 4548.656160][    C0] FS:  00007f439752b740(0000) GS:ffff8880b1f83000(0000) knlGS:0000000000000000
[ 4548.656163][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4548.656166][    C0] CR2: 00007f439756d930 CR3: 0000000023fbb006 CR4: 0000000000772ef0
[ 4548.656168][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4548.656170][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4548.656172][    C0] PKRU: 55555554
[ 4548.656173][    C0] Call Trace:
[ 4548.656175][    C0]  <TASK>
[ 4548.656177][ C0] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4548.656181][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4548.656185][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4548.656188][ C0] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4548.656193][ C0] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4548.656196][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4548.656198][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4548.656201][ C0] ? xa_store (lib/xarray.c:1734) 
[ 4548.656207][ C0] xa_store (lib/xarray.c:1734) 
[ 4548.656211][ C0] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4548.656214][ C0] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4548.656219][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4548.656222][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4548.656225][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4548.656229][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4548.656233][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4548.656238][ C0] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4548.656242][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4548.656247][ C0] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4548.656251][ C0] copy_net_ns (net/core/net_namespace.c:567) 
[ 4548.656255][ C0] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4548.656261][ C0] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4548.656265][ C0] ? handle_mm_fault (mm/memory.c:6413) 
[ 4548.656270][ C0] ksys_unshare (kernel/fork.c:3121) 
[ 4548.656274][ C0] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4548.656277][ C0] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4548.656281][ C0] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4548.656284][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4548.656288][ C0] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4548.656293][ C0] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4548.656296][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4548.656301][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4548.656304][    C0] RIP: 0033:0x7f439756d93b
[ 4548.656307][ C0] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4548.656309][    C0] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4548.656312][    C0] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4548.656314][    C0] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4548.656316][    C0] RBP: 00007f4397528000 R08: 0000000000000000 R09: 0000000000000000
[ 4548.656318][    C0] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4548.656320][    C0] R13: 00007ffcb7327b50 R14: 00007f4397528000 R15: 00000000004082a0
| [ 4552.669121][ C2] hardirqs last disabled at (0): copy_process (kernel/fork.c:2113) 
| [ 4552.669126][ C2] softirqs last enabled at (0): copy_process (kernel/fork.c:2115) 
| [ 4552.669129][ C2] softirqs last disabled at (0): 0x0 
| [ 4552.669138][    C2] Tainted: [L]=SOFTLOCKUP
[ 4552.669140][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4552.669141][ C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4552.669146][ C2] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4552.669149][    C2] RSP: 0018:ffffc900034d7a18 EFLAGS: 00000202
[ 4552.669152][    C2] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4552.669154][    C2] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4552.669156][    C2] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4552.669158][    C2] R10: ffffffffbbee5c03 R11: ffffc900034d78e0 R12: 1ffff9200069af45
[ 4552.669160][    C2] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034d7a58
[ 4552.669162][    C2] FS:  00007f439752b740(0000) GS:ffff8880b2083000(0000) knlGS:0000000000000000
[ 4552.669164][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4552.669167][    C2] CR2: 00007f439756d930 CR3: 0000000023c0b004 CR4: 0000000000772ef0
[ 4552.669169][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4552.669171][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4552.669173][    C2] PKRU: 55555554
[ 4552.669174][    C2] Call Trace:
[ 4552.669176][    C2]  <TASK>
[ 4552.669178][ C2] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4552.669183][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4552.669186][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4552.669190][ C2] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4552.669195][ C2] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4552.669198][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4552.669201][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4552.669205][ C2] ? xa_store (lib/xarray.c:1734) 
[ 4552.669210][ C2] xa_store (lib/xarray.c:1734) 
[ 4552.669214][ C2] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4552.669217][ C2] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4552.669222][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4552.669225][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4552.669228][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4552.669233][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4552.669237][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4552.669242][ C2] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4552.669246][ C2] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4552.669250][ C2] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4552.669254][ C2] copy_net_ns (net/core/net_namespace.c:567) 
[ 4552.669259][ C2] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4552.669265][ C2] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4552.669268][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 4552.669273][ C2] ksys_unshare (kernel/fork.c:3121) 
[ 4552.669277][ C2] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4552.669281][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4552.669285][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4552.669288][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4552.669291][ C2] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4552.669296][ C2] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4552.669300][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4552.669304][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4552.669307][    C2] RIP: 0033:0x7f439756d93b
[ 4552.669310][ C2] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4552.669313][    C2] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4552.669315][    C2] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4552.669318][    C2] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4552.669319][    C2] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4552.669321][    C2] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4552.669323][    C2] R13: 00007ffcb7327b50 R14: 00007f439752a000 R15: 00000000004082a0
| [ 4558.720499][    C3] rcu: Stack dump where RCU GP kthread last ran:
| [ 4558.720781][    C3] Sending NMI from CPU 3 to CPUs 1:
| [ 4558.721017][    C1] NMI backtrace for cpu 1
| [ 4558.721032][    C1] Tainted: [L]=SOFTLOCKUP
[ 4558.721033][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4558.721036][ C1] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141) 
[ 4558.721043][ C1] Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1c 07 00 00 b8 01 00 00 00 66 89 45 00 e9 c2 fe ff ff 89 44 24 40 f3 90 <e9> 5e fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03
All code
========
   0:	02 48 89             	add    -0x77(%rax),%cl
   3:	e8 83 e0 07 83       	call   0xffffffff8307e08b
   8:	c0 01 38             	rolb   $0x38,(%rcx)
   b:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
   f:	d2 0f                	rorb   %cl,(%rdi)
  11:	85 1c 07             	test   %ebx,(%rdi,%rax,1)
  14:	00 00                	add    %al,(%rax)
  16:	b8 01 00 00 00       	mov    $0x1,%eax
  1b:	66 89 45 00          	mov    %ax,0x0(%rbp)
  1f:	e9 c2 fe ff ff       	jmp    0xfffffffffffffee6
  24:	89 44 24 40          	mov    %eax,0x40(%rsp)
  28:	f3 90                	pause
  2a:*	e9 5e fe ff ff       	jmp    0xfffffffffffffe8d		<-- trapping instruction
  2f:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  36:	fc ff df 
  39:	48 89 fa             	mov    %rdi,%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	e9 5e fe ff ff       	jmp    0xfffffffffffffe63
   5:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   c:	fc ff df 
   f:	48 89 fa             	mov    %rdi,%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4558.721046][    C1] RSP: 0018:ffffc900034b7a18 EFLAGS: 00000202
[ 4558.721050][    C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4558.721052][    C1] RDX: fffffbfff77dcb81 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4558.721054][    C1] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4558.721056][    C1] R10: ffffffffbbee5c03 R11: ffffc900034b78e0 R12: 1ffff92000696f45
[ 4558.721058][    C1] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc900034b7a58
[ 4558.721060][    C1] FS:  00007f439752b740(0000) GS:ffff8880b2003000(0000) knlGS:0000000000000000
[ 4558.721063][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4558.721067][    C1] CR2: 00007f439756d930 CR3: 000000000aef9003 CR4: 0000000000772ef0
[ 4558.721069][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4558.721071][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4558.721073][    C1] PKRU: 55555554
[ 4558.721074][    C1] Call Trace:
[ 4558.721077][    C1]  <TASK>
[ 4558.721080][ C1] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4558.721083][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4558.721088][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4558.721091][ C1] ? __d_instantiate (fs/dcache.c:1915 (discriminator 3)) 
[ 4558.721097][ C1] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4558.721099][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4558.721102][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4558.721105][ C1] ? xa_store (lib/xarray.c:1734) 
[ 4558.721111][ C1] xa_store (lib/xarray.c:1734) 
[ 4558.721115][ C1] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4558.721119][ C1] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4558.721124][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4558.721127][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4558.721129][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4558.721134][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4558.721137][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4558.721144][ C1] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4558.721147][ C1] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4558.721152][ C1] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4558.721157][ C1] copy_net_ns (net/core/net_namespace.c:567) 
[ 4558.721161][ C1] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4558.721168][ C1] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4558.721171][ C1] ? handle_mm_fault (mm/memory.c:6413) 
[ 4558.721177][ C1] ksys_unshare (kernel/fork.c:3121) 
[ 4558.721182][ C1] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4558.721185][ C1] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4558.721190][ C1] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4558.721193][ C1] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4558.721197][ C1] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4558.721202][ C1] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4558.721206][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4558.721211][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4558.721214][    C1] RIP: 0033:0x7f439756d93b
[ 4558.721218][ C1] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4558.721221][    C1] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4558.721224][    C1] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4558.721226][    C1] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4558.721228][    C1] RBP: 00007f4397529000 R08: 0000000000000000 R09: 0000000000000000
[ 4558.721230][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
[ 4558.721232][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4558.721230][    C1] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003
| [ 4558.721232][    C1] R13: 00007ffcb7327b50 R14: 00007f4397529000 R15: 00000000004082a0
| [ 4558.721238][    C1]  </TASK>
| [ 4558.722026][    C3] Tainted: [L]=SOFTLOCKUP
[ 4558.722027][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4558.722029][ C3] RIP: 0010:kasan_check_range (./include/linux/kasan.h:64 mm/kasan/generic.c:130 mm/kasan/generic.c:161 mm/kasan/generic.c:180 mm/kasan/generic.c:189) 
[ 4558.722034][ C3] Code: 5b 5d 41 5c c3 cc cc cc cc 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 76 dd 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df <4d> 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d
All code
========
   0:	5b                   	pop    %rbx
   1:	5d                   	pop    %rbp
   2:	41 5c                	pop    %r12
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	48 b8 ff ff ff ff ff 	movabs $0xffff7fffffffffff,%rax
  10:	7f ff ff 
  13:	48 39 c7             	cmp    %rax,%rdi
  16:	76 dd                	jbe    0xfffffffffffffff5
  18:	4c 8d 54 37 ff       	lea    -0x1(%rdi,%rsi,1),%r10
  1d:	48 89 fd             	mov    %rdi,%rbp
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df 
  2a:*	4d 89 d1             	mov    %r10,%r9		<-- trapping instruction
  2d:	48 c1 ed 03          	shr    $0x3,%rbp
  31:	49 c1 e9 03          	shr    $0x3,%r9
  35:	48 01 c5             	add    %rax,%rbp
  38:	49 01 c1             	add    %rax,%r9
  3b:	48 89 e8             	mov    %rbp,%rax
  3e:	49                   	rex.WB
  3f:	8d                   	.byte 0x8d

Code starting with the faulting instruction
===========================================
   0:	4d 89 d1             	mov    %r10,%r9
   3:	48 c1 ed 03          	shr    $0x3,%rbp
   7:	49 c1 e9 03          	shr    $0x3,%r9
   b:	48 01 c5             	add    %rax,%rbp
   e:	49 01 c1             	add    %rax,%r9
  11:	48 89 e8             	mov    %rbp,%rax
  14:	49                   	rex.WB
  15:	8d                   	.byte 0x8d
[ 4558.722038][    C3] RSP: 0018:ffffc90000270a28 EFLAGS: 00000212
[ 4558.722041][    C3] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffffb7cc5ea3
[ 4558.722044][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffbbee5c00
[ 4558.722045][    C3] RBP: ffffffffbbee5c00 R08: 0000000000000000 R09: fffffbfff77dcb80
[ 4558.722048][    C3] R10: ffffffffbbee5c03 R11: ffffc90000270938 R12: 1ffff9200004e14b
[ 4558.722050][    C3] R13: 0000000000000003 R14: fffffbfff77dcb80 R15: ffffc90000270a88
[ 4558.722052][    C3] FS:  00007f439752b740(0000) GS:ffff8880b2103000(0000) knlGS:0000000000000000
[ 4558.722054][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4558.722059][    C3] CR2: 00007f439756d930 CR3: 0000000020bad002 CR4: 0000000000772ef0
[ 4558.722061][    C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4558.722062][    C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4558.722064][    C3] PKRU: 55555554
[ 4558.722066][    C3] Call Trace:
[ 4558.722068][    C3]  <IRQ>
[ 4558.722070][ C3] queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141) 
[ 4558.722074][ C3] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 4558.722078][ C3] ? kfree (mm/slub.c:4643 mm/slub.c:4842) 
[ 4558.722082][ C3] ? __pfx_queued_spin_lock_slowpath (kernel/locking/qspinlock.c:131) 
[ 4558.722085][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4558.722089][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4558.722094][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4558.722097][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4558.722101][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4558.722104][ C3] ? get_partial_node.part.0 (mm/slub.c:2903) 
[ 4558.722107][ C3] ? ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4558.722110][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4558.722113][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4558.722116][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4558.722121][ C3] do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116) 
[ 4558.722124][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4558.722127][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4558.722130][ C3] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4558.722136][ C3] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 4558.722140][ C3] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 4558.722145][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4558.722148][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4558.722154][ C3] ref_tracker_dir_exit (./include/linux/workqueue.h:723 lib/ref_tracker.c:55 lib/ref_tracker.c:223) 
[ 4558.722159][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4558.722162][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4558.722165][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 4558.722169][ C3] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 4558.722172][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 4558.722175][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4558.722181][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4558.722184][ C3] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 4558.722187][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 4558.722192][ C3] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 4558.722195][ C3] ? kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4558.722199][ C3] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 4558.722202][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 4558.722205][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4558.722208][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4558.722213][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 4558.722217][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4558.722220][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 4558.722225][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 4558.722229][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4558.722232][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4558.722237][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 4558.722241][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 4558.722246][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 4558.722249][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 4558.722253][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 4558.722256][    C3]  </IRQ>
[ 4558.722257][    C3]  <TASK>
[ 4558.722259][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 4558.722263][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 4558.722266][ C3] Code: 74 24 10 e8 41 16 53 fd 48 89 ef e8 f9 68 53 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> ba 26 47 fd 65 8b 05 33 7b 1d 03 85 c0 74 0e 5b 5d e9 98 34 00
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	41 16                	rex.B (bad)
   6:	53                   	push   %rbx
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 f9 68 53 fd       	call   0xfffffffffd536909
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 ba 26 47 fd       	call   0xfffffffffd4726e9		<-- trapping instruction
  2f:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b69
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	e9                   	.byte 0xe9
  3d:	98                   	cwtl
  3e:	34 00                	xor    $0x0,%al

Code starting with the faulting instruction
===========================================
   0:	e8 ba 26 47 fd       	call   0xfffffffffd4726bf
   5:	65 8b 05 33 7b 1d 03 	mov    %gs:0x31d7b33(%rip),%eax        # 0x31d7b3f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	e9                   	.byte 0xe9
  13:	98                   	cwtl
  14:	34 00                	xor    $0x0,%al
[ 4558.722268][    C3] RSP: 0018:ffffc900034977b8 EFLAGS: 00000206
[ 4558.722271][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb546081f
[ 4558.722273][    C3] RDX: 0000000000000000 RSI: ffffffffb805ce80 RDI: 0000000000000001
[ 4558.722274][    C3] RBP: ffff88800104fd00 R08: 0000000000000000 R09: 0000000000000000
[ 4558.722276][    C3] R10: ffffffffb9e8c0d7 R11: ffffc900034978e0 R12: ffff88800104fd00
[ 4558.722278][    C3] R13: ffffea00003cf000 R14: ffff888001050940 R15: ffff88800f3c32a8
[ 4558.722282][ C3] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:638 ./include/linux/cpumask.h:1197 ./include/trace/events/preemptirq.h:40) 
[ 4558.722288][ C3] get_partial_node.part.0 (mm/slub.c:2903) 
[ 4558.722293][ C3] ___slab_alloc (mm/slub.c:2864 mm/slub.c:2981 mm/slub.c:3839) 
[ 4558.722296][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4558.722301][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4558.722304][ C3] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 4558.722307][ C3] ? xas_alloc (lib/xarray.c:378) 
[ 4558.722310][ C3] kmem_cache_alloc_lru_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4216) 
[ 4558.722315][ C3] xas_alloc (lib/xarray.c:378) 
[ 4558.722319][ C3] xas_create (lib/xarray.c:685) 
[ 4558.722325][ C3] xas_store (lib/xarray.c:795 (discriminator 6)) 
[ 4558.722329][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4558.722333][ C3] __xa_store (lib/xarray.c:1703) 
[ 4558.722337][ C3] ? __pfx___xa_store (lib/xarray.c:1693) 
[ 4558.722341][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4558.722344][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 4558.722347][ C3] ? xa_store (lib/xarray.c:1734) 
[ 4558.722352][ C3] xa_store (./include/linux/spinlock.h:391 lib/xarray.c:1735) 
[ 4558.722356][ C3] ref_tracker_dir_debugfs (./include/linux/xarray.h:175 ./include/linux/xarray.h:207 lib/ref_tracker.c:442) 
[ 4558.722358][ C3] ? __pfx_ref_tracker_dir_debugfs (lib/ref_tracker.c:419) 
[ 4558.722363][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 4558.722366][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 4558.722369][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4558.722373][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4558.722376][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 4558.722381][ C3] ? lockdep_init_map_type (kernel/locking/lockdep.c:4976) 
[ 4558.722384][ C3] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 4558.722389][ C3] preinit_net (./include/linux/ref_tracker.h:71 net/core/net_namespace.c:406) 
[ 4558.722393][ C3] copy_net_ns (net/core/net_namespace.c:567) 
[ 4558.722397][ C3] create_new_namespaces (kernel/nsproxy.c:110) 
[ 4558.722404][ C3] unshare_nsproxy_namespaces (kernel/nsproxy.c:218 (discriminator 4)) 
[ 4558.722407][ C3] ? handle_mm_fault (mm/memory.c:6413) 
[ 4558.722412][ C3] ksys_unshare (kernel/fork.c:3121) 
[ 4558.722417][ C3] ? __pfx_ksys_unshare (kernel/fork.c:3072) 
[ 4558.722421][ C3] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 4558.722424][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 4558.722427][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 4558.722430][ C3] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4558.722436][ C3] __x64_sys_unshare (kernel/fork.c:3190) 
[ 4558.722440][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4558.722445][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4558.722448][    C3] RIP: 0033:0x7f439756d93b
[ 4558.722452][ C3] Code: 73 01 c3 48 8b 0d c5 94 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 94 1b 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d c5 94 1b 00 	mov    0x1b94c5(%rip),%rcx        # 0x1b94cf
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 10 01 00 00       	mov    $0x110,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94cf
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 95 94 1b 00 	mov    0x1b9495(%rip),%rcx        # 0x1b94a5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 4558.722454][    C3] RSP: 002b:00007ffcb7327b18 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 4558.722457][    C3] RAX: ffffffffffffffda RBX: 00007ffcb7327b50 RCX: 00007f439756d93b
[ 4558.722459][    C3] RDX: 0000000000000000 RSI: 00007ffcb7327b50 RDI: 0000000040000000
[ 4558.722461][    C3] RBP: 00007f439752a000 R08: 0000000000000000 R09: 0000000000000000
[ 4558.722462][    C3] R10: 00007f4397542f18 R11: 0000000000000206 R12: 0000000000000003


Finger prints:
copy_process:copy_process:queued_spin_lock_slowpath:do_raw_spin_lock:xa_store
queued_spin_lock_slowpath:do_raw_spin_lock:xa_store:ref_tracker_dir_debugfs:preinit_net
copy_process:copy_process:queued_spin_lock_slowpath:do_raw_spin_lock:xa_set_mark
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:xa_store:ref_tracker_dir_debugfs
__kasan_check_read:queued_spin_lock_slowpath:do_raw_spin_lock:xa_set_mark:ref_tracker_dir_exit
copy_process:copy_process:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock
__kasan_check_read:queued_spin_lock_slowpath:do_raw_spin_lock:xa_store:ref_tracker_dir_debugfs
copy_process:copy_process:__kasan_check_read:queued_spin_lock_slowpath:do_raw_spin_lock
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:xa_set_mark:ref_tracker_dir_exit
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock
queued_spin_lock_slowpath:do_raw_spin_lock:xa_set_mark:ref_tracker_dir_exit:__put_net